Have they considered just asking for money? Also getting rid of the giant holes that they keep pouring their money into?

A lot of people love Firefox, and would happily donate. They could also trim a lot of fat at Mozilla quite easily.

You can, but the last time I did that the instructions were incomplete, and you still had to auth through Mozilla. That was a few years ago, so things might have changed since then.

If you liked vimperator, you might like https://qutebrowser.org/