Honestly, one of the things they need to do that nobody talks about is move Chrome(ium) extensions away from the Chrome web store. Mozilla, Brave, Microsoft, Opera, Vivaldi and so on should really make a big, vendor-neutral web store to serve all their browsers. It's always felt weird to me that all these browsers presumably have issues with Google in some way, yet all still rely on and use their extension distribution infrastructure.
I don't even mean to permanently switch; Edge, Brave, Opera, etc. should just let you install extensions from either the Chrome Web Store, Mozilla's add-on's store or some other trusted site on an extension by extension basis.
EDIT: Okay, I should have checked things before posting this. Apparently most browsers have their own extension stores, but also support Chrome's. I guess I assumed that them supporting the CWS meant that they only supported the CWS. Sorry about that.
Still, a big vendor neutral cross browser extensions store would be nice.