Why do the undead receives so much attention (3 distinct Undead races with a lot of content) compared to other factions? Considering how powerful the Force of Undeath becomes in the End Times, it makes perfect sense that they would receive a lot more attention than everyone else. Another powerful player in the End Times, Chaos, is currently weaker, but that's because they have an entire game ahead to flesh them out.
The subtle theme of "The Prophet and the Warlock" is "Magic and Technology VS Religion and Nature": Ikit Claw intends to rampage through Lustria to uncover and claim warpstone and arcane secrets to progress Clan Skrye's magical and technological prowess while Tehenhauin will fight back with fanatical fervor and the blessings of Sotek to preserve Lustria's natural beauty and protect his species from being enslaved and annihilated.
The High Elves are often said to be one of the strongest powers in the world when they're actually working together, and this is very much reflected in their Legendary Lords. High Elves excel at two things, magic and archery, and as you confederate more and more of their Legendary Lords they get bonuses that all add to each other. Tyrion allows you to recruit all units in global recruitment one turn faster, while Alarielle reduces both local and global recruitment by another turn for Sisters of Avelorn, the best archer unit in the High Elf roster. Alith Anar boosts all missile damage factionwide, which helps the swarms of Archers, Sea Guard, and Sisters that Tyrion and Alarielle let you recruit faster. Teclis boosts magic faction-wide, enabling all your Archmage Lords and Mage Heroes to perform better. Eltharion is less obvious, but he enables the whole faction to build walls extremely quickly, helping High Elves fortify in a hurry and keep their armies mobile instead of sticking them on defensive where they're not quite as effective. The only outlier, the only one who provides no real bonus to the High Elves as a whole for confederating him, is Prince Imrik. Which makes sense.
Skaven do not have Cavalry in a strict sense of the word. But if you use a more flexible interpretation, the Night Runners, Gutter Runners, and Death Runners all fulfill the role of Light Cavalry while Rat Ogres fulfill the role of Heavy Cavalry. All of them will suffer in prolonged melee but are sufficiently fast enough to outflank the main line of enemy infantry to go after the more valuable assets. Similarly, Doom-Flayers and Doomwheels are Shock Cavalry units (at least by Skaven standards) despite being classified as Chariot-like machines.
They finally get some Cavalry (by Skaven standards) in the form of Wolf Rats and Brood Horrors.
An interesting twist in the story happens during the High Elf Vortex campaign. When the Great Horned Rat sics his super-rats on Talarian and Gallifreus, they kill Gallifreus but Talarian escapes. This seems like good fortune for the High Elves, since they need Talarian and the artifact he's working on for their ritual. In the epilogue, however, they discover Gallifreus was actually a Druchii impostor, and Teclis comments that Skaven, being Skaven, detected the treachery and attacked her because that's what Skaven do. While he's not wrong about this, there's a better explanation. The Great Horned Rat would have known she was a traitor too, so he intentionally had his minions kill her and let Talarian escape. The Vortex Battle showed he was always planning to hijack the final ritual regardless of who performed it, and with the High Elves being so close at this point he removed the last obstacle that could get in their way even if they didn't know it at the time. If the player loses the Final Battle this turns into a brilliant Batman Gambit on the GHR's part, but if the player wins it turns into Nice Job Fixing It, Villain.
It also makes perfect sense that Teclis saw through this twist but Tyrion and Talarian did not despite their being in a much better position to do so. Tyrion is fairly single-minded and tends to favor Cutting the Knot when it comes to political problems and social interaction so he doesn't have to deal with them. Talarian is a White Tower loremaster who probably doesn't interact much with anybody. Teclis's forays away from Ulthuan and interaction with other races on even terms mean he's as much a diplomat as a mage, however, so he would have much more experience reading people, Asur or otherwise, and intuiting their motivations. It says a lot that he not only saw the twist coming but had a fairly good guess who was behind it.
High Elves in general recruit much more slowly than the other races, having far fewer local and global recruitment slots. This reflects their lore; their greatest practical weakness is how slow they are to recover and replenish their numbers.
One of the Gameplay Advice entries states that a Skaven player needs to carefully manage and reduce their Skaven Corruption to avoid getting public order penalties in their settlements. But the truth here is that the Skaven building browser has too few structures that provide anti-corruption to balance out the Skaven Corruption that is being generated, meaning that building a Temple of the Horned Rat is the only long-term solution to preventing a rebellion. In other words, Skaven Corruption is inevitable and trying to reduce it as the Skaven is a counter-productive and futile effort. However, this was fixed in the Mar 18, 2021 Rakarth Update as it gave too much of an advantage to the Skaven since it made counteracting and cleansing provinces that had been controlled or targeted by the Skaven an annoying and tedious chore.
There's a big case of Gone Horribly Wrong that's possible, even likely, when playing as Bretonnia in Mortal Empires. One of the earliest enemies Bretonnia tends to have is Athel Loren, due to sharing a border with the notoriously xenophobic wood elves and the diplomatic research to improve relations with them being a generally low priority. The only way to permanently stop Wood Elves from constantly threatening Bretonnia's borders (specifically Parravon) is to wipe them out. As Bretonnia expands and confederates, they quickly develop the Great Power diplomatic penalty with factions they aren't already on good terms with... like most of Ulthuan. And if Tyrion declares war on you he will almost never accept peace, which means you'll be forced to conquer Ulthuan too since Tyrion will confederate most of the island and invite everyone else into the war. What makes this Fridge Horror is when you remember the 'Lady of the Lake' Bretonnia worships is the elven goddess Lileath. She uplifted the Bretonni specifically to be allies and guardians of the elves, but Bretonnia (with the player's guidance) goes on to conquer and exterminate her own people because she kept her involvement a secret from everybody and her people made some very bad decisions due to that lack of information, and there's nothing she can do to stop it because revealing herself now would do just as much damage as staying hidden.
The odds of this increase significantly with the new Wood Elf rework since the Wood Elves' campaign mechanics encourage them to attack Bretonnian settlements, especially Parravon.
If you don't have any artillery or units with Siege Attacker in your army you have to lay siege and build a siege engine before you can attack. This is true even if most of your units can fly over the walls because flying units can't capture control points. You may even be forced to build a unit of siege equipment with an army literally incapable of using it (such as a cavalry stack with a mounted Lord). This is despite the fact that all infantry in the game come pre-equipped with ladders that don't have to be constructed, and EVERY UNIT IN THE GAME can bash down gates.
