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.
Freud Was Right: The blue and yellow suicide bullets in IIX that chase you are nicknamed sperm.
Fridge Horror: Sakura and her family entered Gilverado by way of a car accident, making their home in the swamp. In the swamp stage, you see a wrecked van. It belonged to Jitterbug.
Game Breaker: Sakura in Mega Black Label has two familiars, making guarding yourself against suicide bullets much easier.
In 1.1 Arranged, Sakura's game-breaker status is challenged only by Follett thanks to getting additional control over her baby dragon familiar which happens to be the biggest damage-dealer in the game.
Sakura is no longer in Deathsmiles IIX, but there are two contenders for her place. First off, Lei has two familiars like she did, with all the accompanying advantages — although he's less broken, being weaker overall to compensate. Meanwhile, Supe's familiar is the ghost of Tyrannosatan, and she is as stupidly powerful as that suggests — she's not the best scorer, but if you just want to play an unstoppable juggernaut who hews a path of carnage through anything in her way, you can't beat her.
Various pieces of art show the girls being a bit clingy with each other (like the cover, for one example)
Macekre: While not to the same extent as Mobile Light Force, there are some very clear changes in the US localization. The characters now have outright horrible clichéd accents, and the controversy practically rivals that of a Jack Thompson lawsuit.
Actually not that controversial. While no one will deny that the translation is pretty lame, since story isn't a selling point of the game, it's not that big of a deal.
Toy Ship: Casper and Lei. In Lei's first ending in Deathsmiles IIX, Casper walks in on him while he is changing clothes. In Follet's first ending in Deathsmiles IIX, Casper hugs Lei from behind even though they are both naked in a hot spring.