Inspired by the Tiny Harry thread. It would be pretty cool to have the various bosses as cosmetic pets. I am reluctant to have this easily bought but well I leave that to the Turbine money people to decide.
Perhaps make these unique reward option on 20th run or something like that. That way they can be earned. If money really is required to be spent for the resource expenditure required maybe a mixture or both. Whereby the reward is a unique DDO Store token that allows the player to buy that specific pet at the store (maybe that idea won't go down too well with the players).
Either way having Cosmetic pet bosses with some of their signature one liners might be cool for some.