Why would I want to "group" tabs though? Is it something related to that disease people have of hoarding thousands of tabs instead of just opening what they actually need?
Chrome's tab groups implementation is pretty nice. I used it at work, very neat. Having tabs grouped by ticket, I might not work on one ticket today, I can collapse the group.
Of course, like its tabs, it's only good in small numbers, and in small names...
Probably how Chrome (and recently, Safari) segregate profiles by window. It makes keeping work tabs and personal tabs (for example) very simple / obvious.
Not Chrome though, so I don't see the relevance. I also don't like it. The address is relevant to that tab only, so it should be hierarchically inside it.
> - Firefox has tab scrolling, minimum tab widths, and the tab itself is a floating box, not a part of the page visually.
So, visual tweaks? Fine, but I don't see how that would improve UX massively.
> - Firefox's address bar is also different, to me it seems potentially also should be A/B tested with directly copying Chrome
Perhaps. Or maybe there's a lot of people who prefer Firefox's. In any case, again - visual tweaks?
I really don't see how any of those would bring great improvements to the Firefox experience.