I think you took me the wrong way which happens to me all the time. I can write with more cut and dry terminology than it would come out in person. (When you write AR's). However I don't know how to do it any other way unless you split everything completely up between the two play styles completely and no ones allowed to get butt hurt if the other side doesn't help you.
I hate all PvP games but you still need PVP to complete some of the quests and if you might just want some really good piece of gear. Or change the wording from mandatory to recommended but again tell everyone no butt hurts...