Although workspaces already do this grouping thing, I think tab grouping on the tabs bar has some good points that can prove it being a cool little feature:
- you won't be forced to close/hide other tabs when opening a group (making possible to have some "common tabs" or just not getting rid of tabs I don't wanna group).
- you won't have to configure anything at all, just right clicking on the tab itself and you'll see everything being created.
Opera GX not having this kinda stuff is the only thing drawing me back from completely migrating. I have ~50 tabs opened and I want to move with freedom without the compromise of having a whole workspace system that will be slow to add tabs to, and will choose what I'll be able to access.
Also, I haven't seen any extensions on the market who do this stuff as mentioned above, although I'd love to hear from you if you have any suggestions.