I managed to switch the account now for organization, but when I download the project assets the zip file doesn’t come with all the scripts and textures I need (most of the files are thumbnails of the images I used), it is basically what you said before.
I think that this is very basic and important feature for good user experience, more than any graphics feature, if you are scared to lose everything when you are working on a large project I presume people will avoid working on big projects with this platform. Even if there is a way to use github for version control, I think that you need some sort of backup for each published version (it could be included on paid version). You mentioned the Google docs model, but you can still “save as” or save a copy.
I will send you my email address in private