just press the system button plus the assigned letter and I'm in the app I want.
Oh, that would be excellent. You could even set them to be the same on desktop for equivalent applications.
I think one of the Linux phones has a physical keyboard. That'll likely be my choice if I can afford it when my current one stops being viable.
I switched to Chrome probably a decade ago, because at the time it was significantly faster. I switched to chromium at some point and ended up back on Firefox when Google's password manager stopped working on every browser except Chrome. Firefox is noticeably faster these days and doesn't crash as often.