Thank you! Yes it's something I really appreciate about bitsy specifically, so I needed to also do it that way. Even though it works slightly differently there (no remix functionality, but more readable source).
It's a feature that I'm definitely keeping, but I'm also playing with the idea of having an "offline version" that runs on your computer. It would have folders for script, image and sound files and exports as a zip archive. But maybe that's also not really in the spirit of the engine.