I wish Farkas would have died because he was slow, both mentally and physically, and I liked Vilkas' armor it was cool. I would like to see a quest in a DLC that involved those ancient tribes that were werewolves.
There definitely could be some improvement. It feels more like another power rather than a curse with some benefits. I wouldn't mind some random changes at nightfall; people in town freaking out if you change..ect. The look of them is fine for me..wouldn't mind some polish on the combat.