Starting with Firefox Version 55 I started to rethink my usage of Tabs: loads of open tabs!
tabexpire helps me to close unused tabs without loosing the found information by saving the url's.

For my personal use I would like to have two extras:
- exclution of pinned tabs - they are supposed to stay
- choosing the location of the bookmarks-folder

Beeing a cured tab-junkie I ask the author for the favour of enhancing this add-on