Don't know if this has been suggested yet, but you know how there are sabre cats in the game? Well, they ought to look a bit like the Pahmar or Pahmar-raht forms of Khajiit.
With some texture changes it would probably be feasible to implement Ohmes (retextured Bosmer), Pahmar(-raht) (retextured (and rescaled for raht) sabre cats) and maybe if someone manages to implement new legs, the Suthay(-raht). And maybe more (see http://www.imperial-library.info/content/khajiit-physiology-phases-and-forms).

Would be neat to find these variations in the various Khajiit camps in Skyrim. It's nothing I'm going to work on, but I just wanted to put my thoughts out there