But keep in mind, other than the experience of seeing what others have created, what's the over-arching goal here? I think the game's biggest issue is that it began life by being advertised as a platformer, and it's not a very good one of those; and while it certainly has evolved way past being strictly a platformer, I think the game is still contending with the original perception of it being one. Keeping this in mind, there's much better options, and said options have a cohesive set of goals, settings, and controls, versus just playing a variety of levels created by a community.
I think the idea and execution of LBP is fantastic; but I also feel that the concept needs to be re-skinned, re-branded, and then re-marketed if it wants to appeal to a new, bigger audience. Also, if future iterations are going to carry the same physics, then MediaMolecule needs to avoid it being billed as a platforming game from the out-set.