Discussion about the final battles
Elemental Forums
The Sorcerer King needs some sort of mechanism in the final quarter or so of the game on par with the "Realm Divide" of Shogun 2 or the Civil War of Shogun 2: Fall of the Samurai.
Right now it's like this (from the SK's point of view):
Part 1: Oh, I've won. This guy is just a meek little administrator serving me.
Part 2; This guy is actually standing up to me and building up his armies.
Part 3: Now this guy is a threat - he's actually killing my senior commanders.
Part 4: Holy crap! This guy might actually win! I gotta throw everything I have at him!
It's the Part 4 that's a bit underwhelming. The SK is supposed to be immensely powerful. Part 4 should mean that the SK is summoning everything he's got and hitting you really, really hard. Plus at higher difficulty levels, the enemy has massive numbers.
One thing I would recommend is making Part 4 more "unique". One of the things I will note about always fighting the SK is that unlike other factions in FE LH, the SK's tactics are too standardized. It should be different each time.