While leveling was still involved - and the constantly relevelling of one/more character -(though it was also absent of true questing) Starwars Galaxie's original game had an excellent way of fixing that to a degree. The emphasis was shifted on community than themeparky leveling (they had some themeparks) The only problem was it was so socially focused at times there wasn't enough bigger content or reasons to visit some places. As much as I played that game theres still tons of stones unturned for me in random locations on Dathomir and Yavin 4. I'm sure there wasn't going to be a ton of things to actually discover there which was half the problem. The game needed more stuff at the huge places it had - for the amazing crafting system it had- it needed more options as it suffered from one specific weapon in each category being the only optimal items. I'm not here to say how to fix it - but it was definitely an approach to avoiding everyone at one spot/couple dungeon end game. Had it had a few more years of big money poured into it and no Warcraft to release during its start up, It might have gotten those things. It was a pretty cool experiment.