I want em all! Rabbits are tasty, and who wouldn't want to sample mammoth meat? :hubbahubba:
Also, saber-toothed cat fangs would make nice jewelry, or make for a good pair of makeshift daggers.
Maybe I could mount a yeti-head on my wall while I'm at it.
Seriously though, I think all but the saber-toothed cat, mammoth, and yeti will appear in TESV. Snow leopards are in the realm of possibility, but seem rather iffy to me. (They are what I especially would like to see in TESV though.)