I'm not really speaking for "Mozilla" because what does that even mean? But as one of the folks doing this summer program for Mozilla, I can say 100% we'd be excited to see a good application around this. There's a bunch of great browsers out there, most based on Chromium, but we're all pretty tied up with search as the only way to fund. Brave's made a step away from that, which is cool. I'd love to see more attempts at browsers with different funding models. If you have an idea and at least, say, the beginnings of a small team who could execute, we're available to provide feedback before you submit an application. thx!