I am indeed planning to add lives, checkpoints and basic enemies hopefully in the next update. I'm also working to add mobile support right now.
Thats really great! As for the camera, don't worry, if you do it, it will be great, if not its ok anyway... BUT you cant deny the depth that these slight changes in perspective can add to the game.
Pandemonium is the first one i saw doing that back in 1996, then came Nights Into Dreams, Klonoa, Kirby 64, etc.
The interesting thing is that the industry seems to be in love with this old method again in recent games such as
Batman Arkham Origins: Blackgate, also the most hyped graphical update for the upcoming
Donkey Kong Country Tropical Freeze for the WiiU, is precisely this! If you feel like giving it a shot, you can add it to the package, or you can sell it as an add-on, or as a completely separate product. I'll be very grateful in any case.
Thanks Graham!