Tesh has made a post about a line I looked at awhile ago with Guild Wars 2 : Death and other inconveniences
Okay, I had an idea, but honestly I suspect until a full on explorationist agenda is supported by games with no real trace of play to win, it wont satisfy. Ironically the explorationists wont be happy until the play to wins are driven before them and they hear the lamentations of their womens. I'll describe it anyway.
Something like if you go for ten minutes and kill X number of monsters in that time all without being defeated or dying, you get $$$ bonus gold. Fail = don't. Actually that's a little like the optional extra challenges you can take on in doofus, if you've ever read about them.
But I suspect it'll still be taken as a penalty, as the person who is defeated isn't having taken gold away, but they are missing out on extra gold. And aren't we all being a bit limited in our view by having (any) play to win challenge?