those who played daggerfall probaly seen the book "on lycanthropy" which says things about werewolves and werebears in skyrim. so if bethseda want to keep to the elde scrolls lore they should add these 2 creatures in the game and enable the player to transform into them.
I think the that Lycanthropy can be found almost anywhere on Tamriel (@Lore?). If they do put it in, I'd hope it would be even more fleshed out than Bloodmoon's associated questlines were.