Feature Request - Collections & Etc.

I would like the ability to add all open tabs in a window to a collection instead of having to individually add them one by one. And also maybe some extra customization/tweaks like what Vivaldi has (Different methods of grouping; Stacked, Two Level, or Compact Fitted to single tab width, Tab Tiling; Multi-Window tabs in a single browser window, Lots more UI customization/configuration; completely custom theme(s), and a Toolbar Editor).  I know this isnt stuff that can just be added on a whim, but i would like to see if any Edge devs see this post. My main request so far is just the collections one i mentioned. Thank you