Remapping controls, like using the sticks to control the mouse etc.
Not without the encryption key, no.
To be able to claim they’re not a monopoly. But I’m not sure what you’re getting at. You want Google to create a new org to compete with Chromium after Mozilla dies? That seems neither realistic nor something to hope for.
Seriously, I hope Mozilla dies so that it can be reborn by a different org that gives a fuck about browsers, because Mozilla sure as hell doesn’t.
And why do you think that would happen as opposed to Chromium just becoming the only browser engine available?
Remapping controls, like using the sticks to control the mouse etc.