Gangrel had some presence until you beat him and Valm hijacks the story. It's like somebody at IS decided this game didn't have enough enemy countries and shoved in Valm.
You have Grima, the big Fell Dragon who doesn't have that much screentime, and when he finally shows up in person, Team Chrom runs off to Valm. When he finally comes back into the story, it's "hurr, we forgot about the dragon man, better go kill him". If he's a good antagonist then so is Twillight Princess Ganon.
Validar is a worse version of Gharnef.
Walhart screams filler.