Three words: Centaurs and Nymphs.
http://en.uesp.net/wiki/Lore:Centaur#Centaurhttp://en.uesp.net/wiki/Lore:Nymph#Nymph
We've got all these creatures in the lore that we've seen, but these two have been just left and forgotten as if they have no place on Nirn. Now obviously, Nymphs are a little more...far-fetched to add in the game, since there's really no lore for them, except them showing up as "monsters" in Daggerfall (the game not the city), but Centaurs have a place, and they've got an established foothold in the world. Elder Scrolls Legends has them as a card that explains that they're found in Valenwood, and in High Rock. So hows about we get to seeing them (or one) here?
It's a pipe dream, I know.
PC - NA
CP 1125
Veric Blackwood - Breton Magsorc DC
Xhiak-Qua'cthurus - Argonian Frost Warden EP
Kujata-qa - Khajiit Magplar AD
Suunleth-dar - Khajiit Stamblade AD
Teldryn Antharys - Dunmer Flame DK EP
Strikes-With-Venom - Argonian Poison DK EP
Rur'san-ra - Khajiit WW Stamsorc AD
Ilianos Solinar - Altmer Stamplar AD
Iscah Silver-Heart - Reachman Magden DC