Thank you very much for the thoughtful review! I'm glad to hear you've had a good first impression, though I'm sorry to hear you hit a crash (even if the feedback was clear). If it happens again, please do report it on GitHub so that I can track it down—I try very hard to make sure users never have to see that notification. :)

Thanks also for the suggestions—I'll be sure to keep them in mind! I agree the default setting of "stash and show the UI" can be a bit unsettling for new users and I do plan to change it in the future. To your point about adding to the stash without closing tabs—you can do this by holding the Alt (or Option) key when clicking the "Stash" button.

Thanks again, and I hope you continue to find Tab Stash useful!