What's the justification for that? Why do PvPers always ask for "something exclusive"? Do you really believe optimizing one's gameplay for PvP entitles one to special treatment? I have never seen a Solo or PG player ask for special rewards or preferential treatment, or to take gameplay away from open players.
Those people should really get the message: This isn't a PvP game, there are lots of players who are just not interested in PvP, and the game supports that through its modes. You're not special because you play in open. You play your game, I play my game.
It's a thought experiment @Helmut Grokenberger !
PvP is valid gameplay, all I am imagining is thinking of a scenario (like the one that Ian describes) that you could see yourself participating in - though the aforementioned activity doesn't seem very interesting in all honesty.
If you've no interest in any type of PvP activity it's fine to say so - this isn't an attempt at a "gotcha" or anything like that. I was just interested if there were any circumstances you would consider choosing Open for a structured PvP activity for PP. Seems like a clear no!