I love Office Tab and often have 5-10 word documents open at a time.
I would love to be able to save the entire list of open documents to a simple named project file (xml?, JSON?) so I could then open that entire set of files again quickly.
Having this would also allow automatically saving the last set of files when close-all-tabs to exit.
This would be a great additional feature that would not be hard to implement.
PS - I have shown Office Tab to several more people that are buying it :-)