Ability to enable/disable vertical tabs per window/for each window individually so windows on some screens can use horizontal tabs while on wider screens they can use vertical tabs.
I am waiting for it, and can't wait anymore. I am programmer who can help voluntary with it, so if you want to give me info. Furthermore, I need it to work on horizontals monitors and verticals, i used to both of it.
I frequently use multiple Firefox windows for different purposes. I'd like to use vertical tabs in one window and horizontal tabs in another, while keeping the same Firefox profile, extensions, cookies, and login sessions.
The tab layout should be configurable independently for each window rather than globally for the entire profile.