1. I like the idea
2. I have too agree that the controlls are very floaty and therefore slow down your game
3. I like to always have a visual aid where I can orient myself with hiddenplatforms because like this you have to remember where stuff is while climbing and avoiding obstacles or catching a lift and then I'm at the top thinking "ok that will switch me back but I have no idea where I have to be next" and if you guess wrong you start again...
but your game is not that far removed from mine - give it a go!