If you have used the Arc browser for a few weeks, one thing you will instantly notice apart from the visual difference is the command bar (cmd + t). You need to hit cmd + t for new tabs, search history, search extensions etc.

I've been a fan of RayCast for quite some time and this approach for a browser made sense to me.

Do you think this will show up by default on the most popular browsers like Chrome (or chromium based browsers), Firefox or Safari? Why or Why not?

Does this go well with the mouse-heavy users? (creating a new tab takes two clicks in Arc).