Idea for higher level players.
Make a new zone or convert an existing one. Now in this zone put a town or base. No save terminal and whompa out only back to civilization. So people can't camp out here......
Make zone NO-FLY. Planes don't work. In order to get to town/base, you must run. The run should be long and hard but not impossible, and there should be hella high level mobs that chase you the whole way. Probably best to do this in small groups for best chance at survival. Think level 75-100 as minimum to attempt this passage.
If you make it to base or town. This is primarily a team zone. No soloing. Have some new/unique mobs that drop rare or unique items. Random their location to complicate camping. Could be a static dungeon or series of them. Also what about some really interesting mobs like sand worms that need several groups to bring down.......yes I know lag may prevent this. Also could have some unique shops that sell items not found anywhere else on the planet and they cost millions of credits........quest for IP/skill bonuses that are difficult but possible and the payoff makes them worth the attempt.
Would this be so hard to code? Or even fun to ...........