- If it is indeed too challenging for Firefox to compete against Chrome with a separate browser, there might be value in Mozilla maintaining an open-source fork of Chrome. This would allow Mozilla to borrow the good bits of Chrome for relatively low effort, and focus development effort on the the things that Google might not value so much (e.g privacy). It would also be a hedge against a Google monopoly by having an open source competitor available.
- I'd love to see a solid open source clone of Android—including a full clone of Google Play Services. I think Mozilla could help a lot here, especially if they integrated their fork of the browser.