Banner Lords: 1 legendary, 1 epic
High Elves: 1 legendary, 1 rare
Sacred Order: 1 legendary, 2 epic
Barbarians: 2 legendary, 1 epic
Ogryn Tribes: 1 epic, 1 rare
Lizardmen: 1 epic, 1 rare (and 1 legendary if you count var-gall)
Orcs: 1 legendary, 2 epic
Demonspawn: 1 legendary, 1 epic
Undead Hordes: 1 legendary, 1 epic, 1 rare
Dark Elves: 1 legendary (2 if you count lydia), 3 epic
Knights Revenant: 1 epic
Dwarves: 1 legendary, 1 epic, 1 rare
Shadowkin: 1 legendary, 2 epic
so what i'm getting here is that by "cumbersome lack of revivers" you actually meant "revival on par with or superior to just about every other faction". bit of an odd way to phrase that, if you ask me.
you're right that skinwalkers are a weak faction and in need of improvement in a lot of areas, but this is not one of them.