Hi! Thank you so much for your detailed feedback!
I believe the platform editing and permanent placement of platforms present new problems that detract from our original concept for the game, although it does take gameplay in a very new (and possibly very fun) direction. From a tech perspective, extra code will be written but it's fine. An easy method would be to drag one corner of the platform onto the other corner to delete it. I get where it's coming from, but the split-second decisionmaking is what we're trying to accomplish, as well as the core mechanic of not being able to have permanent platforms.
I think not panning the camera to the goal after restarting is quite interesting, and also with other playtester feedback we will definitely add a text-based tutorial message of how birds jump on trampolines in the first level or so.
(p.s. how many levels did you get to before you got stuck?)