It would be fantastic if Brave implemented like Tab Stacking, this can be very powerful to keep the toolbar manageable.
I know this is my second feature request from Vivaldi but I have started to find that browser very unstable, and Brave feels much quicker and lightweight (tho I suppose this is due to not having these sorts of features)
Ive recently been using Vivaldi for my research work because of the tab management - I like the multiple options for stacking. Having 50 tabs open in Brave is difficult as in having multiples of instances with many tabs open.