I think they should add some basic pickup radius (like 5 yards) for all players to start with, becuse without any it is really annoying to have to walk over each pile of gold, and when sometimes it is behind a rock or chest to be unable to get it. Also will be not that convinient to skip 1 good stat for lets say 7 yards more of pick up radius
I think we'll be seeing one of four things when pvp is put in.
1. Massive damage nerfs to class' and helath nerfs for monsters across the board
2. Crit damage nerf (very likely)
3. A debuff system to nerf our damage or to raise our health in pvp
4. Guild wars 2 style game play that they put in wow in their challenege modes where everyone has an item level of X even if you're level 1 or 60 you'll have the same item level as everyone else but maybe do 1 or 2 points of damage more than the other person.