Just like how in World of Warcraft if you go near to where you died you can respawn, it would be cool if this were implemented, with a config option to determine the range to death location where you can respawn.
This would make it a nice addition for servers where you might want to have control over mods and not have players posses other mobs and simply use this mod as a neat respawning method that allows you to get to your corpse safely.
A second suggestion would be to have, like in WoW, a block you could right click to become human again, rather than go to your corpse. Although this isn't such a much needed feature, since you could create this using CraftTweaker, it could be a nice addition for the base mod.