The idea is that you play as a wolf, hunting down prey (rabbits, foxes etc.) and killing hunters or travellers. I think if a mod maker was willing to make it more complex then a wolf pack system could be added, where one grows a pack of wolves to terrorise Skyrim, and wolf perks could be added too. I can imagine it would be a kind of 'Game of Thrones' thing and would appeal to a lot of fans.