Hi,
At least for the paid version, I consider a must to be able to connect web, desktop apps and mobile directly to the main 4 cloud services (on top of the local option) to have the files syncronized across multiple devices.
It is a much better option for the users than work only on local and then syncronize the files, since in many cases we are forced to use different platforms, where iCloud is not suitable for example, or as in my case, I use OneDrive as a personal service but a professional account at work. By doing the connection directly with the cloud provider, everything is perfectly syncronized across all the devices.
It would make the app perfect to work at home with my Mac, at work on a web browser and on mobile with my iPhone + iPad (or an android phone)
Please consider this solution as the best one for most of the users
Thanks for your great application !!