The ability to open one of several recently closed sessions would be wonderful.
When I used Google Chrome I used to work with multiple windows containing different tabs as I could always open/recover that group again if I closed it without fear of losing which tabs/sites I had open.
After moving to Firefox that is not an option. I would either have to bookmark everything or work on one page and sort through which tabs I have open.
Story time: This morning I've opened Firefox to a new tab window. I've then realised a piece of software has done an update to a program that requires system restart, so I restart, I then open Firefox only to find that the session with around 20 tabs I restore every time I jump on the computer is now gone.
While researching a fix for this, I've found a cumbersome way to maybe get those tabs back by going into Firefox's profile then restoring one of the few backups but this has never worked as this is the fifth time this has happened, not all events are faults of my own but if it were to happen on say Google Chrome it wouldn't be an issue.
Attached are screenshots of Google Chromes tab/window recovery options as well as what I'm presented with when opening Firefox to try and recover the lost tabs.
I might have to go back to Google Chrome as this feature is quite important to me 😕