I really like this idea, just to clarify - is it your intention to create open source code that can be (with a little bit of devops knowledge) hosted on the server or you choice just to help creators? If it is the case, the idea is wonderful (although I am not sure about how many creators actually have the knowledge to self host such a code on platforms like heroku or aws).

If it's not the case, I must ask - do you have some source of revenue for this product in mind? I have a few ideas but it's not easy in this case