I think a lot of us Firefox users would see that as a good thing, or at least no worse than the status quo. Firefox is now a small slice of the market, and it seems Mozilla has lost the will to ever truly challenge Chrome again. Maybe removing the easy Google money would be, shall we say, motivating.
They never intend to challenge Chrome in the first place. Once they displaced IE, and Chrome gained ground they considered themselves mission accomplished. Although I cant search for the reference where Mozilla said this. It was in the early 10s.
Much more looking forward to Ladybird.
Rehire the servo team.
Focus on the devs.
There was a time, when firefox with the firebug plugin was the dev tool for the web.
So people made sure websites worked in Firefox.
But since quite a while, chrome dev tools are superior in allmost every regard and the ff ones unusable to me.
Oh and let go of the expensive management. The one that openly talks about privacy, but ships FF with tracking and advertisment integrated by default. Stuff like this burned my trust.
So I still use FF, because chrome is not better in that regard, but that is the only reason.
That’s how I would start. I have lots of other ideas for longer term projects all focused on the browser.