I don't see the difference between a player wandering into a higher level wandering monster encounter than PvP. That being said no low level casual player is going to enjoy being completely destroyed by a high level raid character every time they leave the town to gather some resources. I think the development team are looking at balance of risk and reward. Lower level characters will have to stick closer to towns to gather lower level resources. Medium level characters will be willing to stray farther from towns to gather better resources. And finally if your looking for exotic resources you will have to go off the beaten path and have higher PvP, and PvE threats. Likewise, it would be nice to have wandering patrols so those labeled as criminals would have a chance of wandering into bounty hunters. It could actually be self policing. Town nobles could offer nice bounties on criminals and player characters could keep an eye out for them.