Back in the day invision synced sketch files directly from google drive. This had both its pro's and cons.
Now, with craft, its a lot faster, more stable and we're in more control.
However, I sometimes miss the function to just sync everything. Especialy when working on larger multi-page projects, its quite a hassle to sync 'all artboards on page' on every page (x20) and then have to wait until it has finished before sending the new one 'because it's already syncing'.
A 'sync all artboards on all pages' would be a very welcome addition. Of course keeping the '-' exceptions in.
Alternatively, when selecting multiple pages in sketch craft could say 'all artboards on selected pages' instead of 'all artboards on page' and then sync all selected ones.