I loved the concept; I've always thought that more open-ended puzzle games would be cool. I like that it gives the player more freedom to just try things, and doesn't guide them so closely.
By the way, I've seen your GMTK game jam games for the past 2 years (they've been awesome), and it's also super cool that you branched out into 3d (I've always been a little nervous to do so myself).