I think improving on the syncing-workflow and enhancing it to offer more then just syncing would be something useful. Something like automated actions, or filters.

I store sourcecode in my dropbox, and I really would prefer a way to not sync certain junk-files from compiling-process. Or let it automatically commit to a git-repo if there are changes in certain folders. Something like IFTTT for files seems a sane solution that dropbox seem to miss for a long time now.

I do something like this with their CLI to ignore node_modules folders for js dev on mac/linux:

    exclude_folders=$(find . -type d -name "node_modules")
    dropbox exclude add $exclude_folders
    dropbox exclude list # Sanity check

Incron[1] is pretty great for "do X when file Y changes"-style rules.

[1]: http://inotify.aiken.cz/?section=incron&page=about&lang=en

Thats what I wanted it for. Then a single license magically turned into 5 enterprise licenses, became impossible to cancel, and drove me away from the company forever. I mean...$750/yr to sync files?

Please dont mess up HelloSign like you did with the parent company!