Hello, how are you? I Can develop a totally innovative cloud system. Users can create accounts, share and download files, but you choose the space for the FREE plan. You can add plans for PRO (ex: bronze, silver and gold) with more disk space and make money each month or annually with each Member. The Site is fully responsive and customizable to your taste.
take a look on this example ([login to view URL])
This is just one of the models that I can offer, feel free to solve any questions.
Regards, Jonatas