Having played the web trial, finally (and netplay, too, which was surprisingly good if not for the fact that I manage to have 30~ FPS... local, even!), I can safely say that I am incredibly hyped for Urban Legend in Limbo. It feels like an improvement over HM to me and all of the mechanics aren't too bad and pretty fun. The timer issue is no longer a concern of mine because occult orbs appear so frequently it's fine, really.
Anyway, I love it. Can't wait for the full game.