It appears that EFS stops working periodically, with little warning.
It would be really useful if there were a "live" status update on EFS when we log into EFS.
For example, today I uploaded a patent application. It was validated, and everything looked like it was going well, until I clicked Submit. At that point I got a notice that said: "Your request could not be completed at this time. Please try again later."
The system should know whether submissions are functioning. If they are not, just give us an alert saying "EFS-Web may not be working right now." That way I wouldn't waste 30 minutes uploading everything, verifying it, just to find out that I can neither submit nor save the submission.