These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Final Fantasy V
Americans Are Indifferent: In Japan, Final Fantasy V is one of the more popular installments, more popular there than Final Fantasy VI. Overseas, it isn't as popular, due to its temporary No Export for You status, being the only numbered Final Fantasy game of the SNES generation not imported stateside, on top of being from the pre-Final Fantasy VII era. Also, whereas Japanese gamers didn't like the bigger emphasis on story that VI had, Americans did, and Western critics knock down this game's lack of story and seemingly bare-bones characters (and the high random encounter rate).
Faris was easily the most popular member of the main cast before Dissidia raised Bartz's profile, for being a Badass pirate and princess who actually acts like a pirate and doesn't take any crap from anyone.
Also, Galuf's Dancer costume—a shirt made of frills and orange hotpants—is a hugely popular subject for Japanese fanartists.
Fanon: Some fans take Krile's statement that Bal lacks an heir and jokes "as if" about taking the throne herself to mean that she's adopted. It's worth noting that Relm in the next game has townspeople drop clear hints that she's not Strago's blood relative, whereas nobody in Bal says that Krile was. The Ultimanias also list Relm's relationship with Strago as "raised by", while Krile's is simply "granddaughter."
Bartz/Faris is a very popular subject in Japanese fanart. Aside form Faris, however, Bartz is more commonly paired with people outside of his own game...
For example, a lot of people like to pair Bartz with Terra despite them never having spoken to one another in Dissidia, but the fact that neither one of them has an official love interest really helps matters.
The most popular is Double Cast Bahamut and then Mime it. Granted, you only get Bahamut at the end of the game, but any and all fights afterwards, sans Shinryuu and Omega, become pitiful fights.
The Mime and Freelancer classes automatically get every passive ability from any class you have mastered. There are many applications for this, but the most famous is to get a Mime or Freelancer Bartz who has Dual-Wield, Rapidfire (four attacks on random targets, each at half damage), and Spellblade (charge any swords you're wielding with certain Black or White spells; only need to cast once for the whole battle). The end result is that you can attack a boss eight times in one round, for four times the damage of attacking normally. Also, each attack can be charged with the boss's weakness element, or just souped-up with Flare, Bio, or Drain. How powerful was this combo? Powerful enough that it became Bartz's Limit Break in Dissidia: Final Fantasy.
The GBA remake adds the Gladiator class's "Finisher" ability, which, at the job's maximum level, has a 3/4 chance of either delivering a critical hit or an elemental-based hit that automatically hits For Massive Damage. Add the Knight's Doublehand ability to double your attack power and you've got a wrecking ball in a human suit.
The Chemist class, normally impressively useless due to the fact that the game doesn't actually tell you what the item combinations for Mix are. But if you do know, you can create mixes for halving an enemy's level (yes, even on a boss, in a game where level means everything), increasing your levels by 10/20, and so on. Also, halving an enemy's level makes them automatically susceptible to Level2 Old, which drops their level further...
Also, Drain Kiss. Combine a Maiden's Kiss and a Turtle Shell (which are always dropped by an early-game enemy) and you get an attack that deals 1500+ damage at a point where every other class is struggling to deal 500.
The Return/Reset spell. If you have someone with Time magic and just 1 measly MP, you can do the whole battle over again. Everything gets reset, including countdown timers and MP:(i.e. The spell is effectively free.), to however the battle started. This makes stealing unique rare items and figuring out any Puzzle Boss just a matter of keeping the Time Mage alive and patience.
Note that this is bugged in the North America GBA release — timers do NOT reset.
If you run away enough, the Chicken Knife becomes one of the strongest weapons in the game, with the caveat that it can randomly cause you to run away instead of attacking. Use a command that doesn't trigger special effects, like Aim or X-Strike, and you can get all of that power without worrying about running away.
The Bone Armor is very powerful armor, but makes the character harmed by healing magic. There are two ways to get around this. White Wind heals everyone a fixed number (the caster's HP) which overwrites the Bone Armor's effect. Or use Magic Sword to attach drain to your attacks.
In the Super Famicom version and PS1 port, this is done by using the Kiss of Blessing on Exdeath (Holy Water and Maiden's Kiss using the Chemist's Mix command).
Hate Dumb: This game has received a lot of hate for having a decidedly silly, trivial plot, with little to no regard for the gameplay.
Although the "triviality" of the plot is also up for debate, considering that it has many tense, sad, and touching moments, Character Development, and world-saving stakes—just like any other numerical FF.
Magnificent Bastard: Exdeath is a very accomplished villain. He manipulates various world leaders into shattering the crystals despite still being sealed, leads the Light Warriors on several wild goose chases, gets them to actually destroy a seal that (to put it mildly) they should not have, and very nearly accomplishes his goal. Pretty impressive for an amalgamation of various evil spirits.
Narm Charm: The GBA script is well-liked for not taking itself seriously. The player can also invoke this with certain job/ability combinations, such as Galuf in a Bard's frock calling on the forest animals like some kind of Disney princess... and there's nothing to prevent you from making him a Dancer in his final battle with Exdeath.
Never Live It Down: According to some, Exdeath is a laughably stupid and absurd villain because... he is a tree. The fact that he completely trashed Galuf's homeworld thirty years ago, accomplished 99% of his goals, manipulates or coerces his victims into doing a good chunk of his work for him, completely changes the face of the world, and kills two major characters, is, apparently, completely negated by being a tree.
Nightmare Fuel: This is a family of undead enemies that take the form of a floating head with the face ripped off and floating in front of the skull and an elongated tongue feeding from the skull's mouth through the mouth of the face in front (and little stringy bits connecting it to the rest of the flesh on the skull).
Krile always faces the viewer in every single battle & menu sprite. It's a little creepy after a full game of everyone else looking at the monsters.
Although people who have played the sprite-based versions of Final Fantasy IV and Final Fantasy III may be less unnerved, as the child characters' battle sprites are rendered the exact same way in those games.
Nintendo Hard: So much so that this was the reason the Super Famicom version was never released in the US. Some people consider this game to be the hardest game in the series.
Puzzle Boss: However, most bosses have some elemental or status weakness, or stats exploitable by Blue Magic. If you know what you're doing, most bosses last for two rounds tops. And if you have also the Reset spell...
That One Attack: Shinryu's tsunami, by far the most damaging attacking in the game that does over 8 THOUSAND damage. Unless you're at a really high level, or possess coral rings (which absorb water damage, and are quite expensive even late in the game), you're dead if he uses it, and he opens up the fight with it. In essence, if you can't survive the attack, you'll never defeat Shinryu.
They Just Didn't Care: Many of Faris' job costumes in the mobile release. She's supposed to be Bifauxnen, and the original gives her fairly androgynous (or at least less feminine) outfits most of the time. The new sprites make her as busty as Lenna except for the few jobs where her chest is obscured with a shawl or tabard. The trailer even shows her job artwork, where her build is obviously patterned off of Bartz and Galuf's, but it's not reflected in the game.
Woolseyism: Nobody really complained when the main character's name was quietly switched from Butz to Bartz for the U.S. localization. Many of the lines in the Game Boy Advance remake also qualify for making the script more fun to read compared to the rather bland translation of the PlayStation version.