It would surely make for a much needed change, questing for love is afterall something just about everyone could relate to, wether its romantic love, or love for a friend or family member, it would bring in a fresh breath of air instead of the old quest for love of country and noble cause. How about greed and riches, the old fame and fortune???
Vampire: The Masquerade. Nothing but love. In fact, the hero doesn't even care about what happens arround him. The evil endings are nifty (although easier than the good one). You can just drain the evil guy dry and kill everyone arround.