I'd love to see expanded editor support for tablets. My personal setup involves a desktop computer and iPad for couch/bed, but at the moment the editor is broken and unusable on an iPad. Would be awesome to see that fixed so I can make games on the couch/bed/lawn/etc!
(And as a matter of fact, I have a PR on Github that should do just that, cough cough 😎 https://github.com/le-doux/bitsy/pull/118)