All nice and easy to use with just the features needed,just the addition of ability to sync with online storage like dropbox so one could install this instead of dropbox but have more features.I quite like it.Don't know why so negative thumbs but...
To make registration easier it would be nice to be able to actually click on a window to bring it up without having to keep minimizing all my windows till I finally see it again.
Change or provide an appearance (icons mainly, but background too) for the application so that it feels more professional, more integrated with the OS.