Cut the tusks and you have the making for a gnome druid cat form. It doesn't really fit the trolls. Judging by the playable trolls natural region and body type, this is the wrong kind of cat. Trolls are extremely tall and skiny, this is short and stuby. The trolls come from the islands off the coast of Durotar which are inhabitted by Tigers and Raptors. And on the coast you're much more likely to run into a lion than you are a bobcat / lynx creature, which are found in cold climates much like the gnomes inhabit.
It is good work though! For sure a WIP but I could see blizzard pumping something like this out.