I disag
I disagree, the undead are the undead, they are beings or creatures that died and came back to life, and so in every fantasy story or game I've ever seen.
Of course the focus is usually more
Models
Models of the various undead can also be used as corpses for in-game scenarios.
I think
I think it would be relatively easy because they wouldn't start from scratch, they could just take the human model and decrease the amount of mass and add bone and a different color to the skin.
The und
The undead mounts can be a kind of frankenstein mount, as they can change legs or add wings.
Ther
There is a discussion on the forum about mounts feel free to discuss
The community is very friendly :)