I think that the current type of PvP games mostly used by other games are not suited for ARMA(2), But this doesn’t mean it cannot not be done, they have to come up with new type of PvP, that will make teamwork and cautious(not sure I spelled it correct), the most fun way to play. Without making it boring.
They have to use the things that make this game different.
Use the big world, by given pvp objectives that follow each other up. This make traveling important, but will concentrated most players toward 1 point.
You could place some NPC’s at the objectives so that rushing is out of the question.
Make respawn only available but only if your helped by one of your teammates.
There are tons of possibilities, and I think that PVP can be a lot of fun in ARMA2