To quote another thread also suggesting a feature, one feature I miss (or haven’t worked out how to use at least), is something like “Quick Add Next” similar to SublimeText.
In the SublimeText config it’s set this way:
And it does exactly what it says. When I close and open SublimeText, it restores my existing tabs and windows much as a Mac does when it comes back from reboot. As a result, I never need to pay any attention to what’s saved, open, closed and so on: everything just comes back when I restart the editor. Assuming that I haven’t missed this existing feature, I’d suggest it as one that’s really pretty useful.