PvP without crosshairs and freedom of movement feels like a waste of time to me. If pressing numbers is skill then I wasted so many years on Unreal Tourney.
You need crosshairs? Noob!
Seriously twitch skill is not end all be all. I don't understand why people disregard the fact PvP games that aren't shooters or strictly action games still take skills.
I am playing Scrolls here lately and that is very much a PvP affair. Something like GW2 is a hybrid of that style of competition and something twitch based like CS.