I would also like to +1 this request for multiple rows of tabs. The Tab Menu is sort of an option, but it pales in comparison to a scrollable row(s) of tabs that are still large enough to be viewed meaningfully.
I run an older version of Firefox simply so I can run Tab Mix Plus which does two key things for me:
- allows up to three rows of tabs to be visible at once (and scrollable beyond that)
- sets a minimum tab width in pixels so that tabs can still be identified easily.
Please see what you can do about prioritizing this one - I'd +1000 it if I could. Thanks!