I just spent the last few hours poking around both the Steam workshop and the Skyrim Nexus looking at mods and I think I found some interesting stuff.
This Playable Dremora mod seems to work very well. Coupled with this Dremora customization mod you can make some pretty cool looking dremora characters.
And while I was poking around I found something that sparked my interest but I have not tested yet. "Higher Magic - Child Character". Couple that with a few model fixes for children and you can play a pint size dovahkiin.
And just for shits and giggles, a mod that makes Babette (the child vamprie member of the Dark Brotherhood) actually wear a DB uniform instead of that generic red dress.