I played this for a couple hours last night... The presentation is really charming and the game is beautiful. I'm not sold on all of the mechanics though. I can forgive a lack of wall jumping, but being able to grab a ledge but not jump off it or climb up it is extremely frustrating. The three levels of depth are confusing and don't seem fun as much as a way to make the player able to go up and down without actually passing through objects like in many traditional 2d platformers. I'm also not crazy about the super floaty jump, but it seems to be predictable enough. The jetpack is pretty fun though shaking it off is shit.
The premade levels seemed pretty promising, but the user made levels seemed like good time wasters that there wasn't much point playing. Of the levels I played I had the most fun with World of Colour, and the Ninja Warrior one was promising (though I would've liked some different challenges in there). The Collossus level was pretty but the actual Colossus part was pretty lame.
Maybe when users start using it more for art and puzzles the game will be more worth playing, but when I was done playing a number of users levels I felt like I'd wasted time that could have been used playing better "real" games. It was like I spent time on youtube and I just watched random peoples video logs and whatever else came up. People are spending a lot of energy making the game do crazy stuff like have a boss where you shoot a cannon into its stomach... and it's cool that they did it, but it also just kinda sucks and it's janky as all hell. Playing Green Hill Zone LBP is nifty, but it's also dumb.
I'm sure that a month into the retail game there will be some really great stuff (paying for potential again), but the platforming foundation itself is not as solid as I hoped. Also, is there a way to show only the most hearted levels, or the one with best ratio of plays to hearts? I couldn't find one and this seemed pretty messed up.
I'll probably still buy the game (I'll have to get a second controller for it), so there's not much point in playing the beta anymore. I may try it again to have a go at making a level, as I haven't done that yet. Not much point in taking time to do it well though.