Really good job having the level design slowly introduce concepts, although I think you should have introduced the cannons sooner (because that's when things clicked for me. Moving in one direction never really was a problem for me and thus didn't really add much. It might make it more involved if you tilted the pogo to control your movement (farther forward == faster). That could add some nice risk (speed) v. reward element so the player is engaged while moving between challenges (ex. just pogoing on safe ground).