Check "Ctrl+Tab cycles through tabs in recently used order" in the settings and you'll see it's already there. It only works in one direction, tho.https://support.mozilla.org/en-US/kb/tab-preferences-and-settings
Happy to see expand on hover as a high priority! Related to that, I'd love to see the option to make the expanded sidebar float. Right now it shifts the layout of the website and on a small screen like my netbook's that's a hassle.I already asked for...
I only want two things: the option to expand the sidebar on mouse hover (already wip, iirc?) and the option to make the expanded sidebar float instead of shifting around the site layout. I'm used to it from Vivaldi and it would make life on my little...