My requested feature is the option to enable putting a tab group inside another tab group, so it can essentially act like a folder of folders.
This would allow far more extensive tab management and compartmentalisation of the browser, letting it compete with browsers like Arc, Zen, Floorp, and so on that have different “spaces” which allow for folders inside of those spaces.
I am someone who uses a lot of tab groups, i’m sure many of us are, and having a stack of folders taking up half of the tab bar when not in use isn’t the ideal use case (or aesthetic when we’re tying to be minimal). For those like me, this would made brave super organisable, and very clutter free, while still letting us engage in our billion tab dreams.