This game is my absolute favorite for the obvious but unique gameplay as a marionette.
I feel the game is far too limited as just a autoscroller platformer. I wish you would have expanded upon the style of a marionette play. Make it more RolePlay focused. Like make big gestures to convince a crowd of people, bow down before the king, swing your sword to slay the dragon! etc.
The last thing I might want to suggest is to try experimenting if this game could also work for mobile/IPads. And see if your game could work on those markets.