I wish Constellation had a list of filepaths used by a project (perhaps sorted by number of pairs that have opened it), each of which linked directly to a diff view for that file. (I use Constellation during class on my ipad, so a UI that requires editing the URL to get a specific diff view is slow, undiscoverable, and prone to error.)
It would probably be important not to have to open the all-diffs view to get to this list, because part of the point is to avoid the load of the full diffs view.