Yes, this is really needed. Not only a “default” option for all users, but then each user could customize it, because not everyone needs to have a button to make the text “Bold”, or "Italic, of even the “Ask AI”.
But for now, being able to at least move things around globally and adding them to the hidden/cog wheel menu, would help.
On my 13" screen things are starting to get a little bit cramped (I always like to have some of the original topic visible for quoting sections, etc):
