Well yeah, but the great thing is, the puzzle system is really excellent, so if you liked the game for the puzzles as well, community amde maps will just make it all the better. I certainly isn't going to harm it is it?
And I never suggested that it would, did I?
I played for the game as an experience - the notion of going back for some arbitrary and unconnected puzzles doesn't sound like something I'd have fun with. Me. Personally.
I'm sure a great community will build up around it, but the thing is (having listened to the developer commentary) they went through dozens of revisions of each map, lots of playtesting, lots of focussed groups. And what they ended up with was a work of genius.
Turning that into a straight up puzzle game kinda defeats the object for me, and I'd be surprised if it touches the base package for quality.
Hope you enjoy the extra community levels, though - it's the great thing about the PC as a platform. Lots of extra content there if you want it.