R
Yes, I tried sessions. My problems are:
If I open a session, and make changes (open/close tabs), I cannot update it. I have to save it, and delete the old one.
If I open a session in a new window, and close the original window, that session's modification is lost if I not save it.
Mainly if session modifications could be automatic, I would be happy with "live sessions", where I do not need to save them by hand every time.