I agree with everything, except that this is something that can be polished into sth. usable. After trying Bonsai, I think it's a promising proof of concept that demonstrates what should now be implemented properly. A ‘quick’ hack on top of Electron is just really slow and clunky compared to a ‘real’ browser.

I know this is asking a lot, but as an end user with an unlimited budget for big dreams, I'd like to see something like this as a fork of Firefox that eventually gets enough of its changes upstreamed so it can become just an extension for the browser I'm already running anyway.

Anyway, a little addendum:

> Why go fullscreen and modal?

And for when I want it full-screen and modal, at least do it right, please. E.g. it shows up in the cmd-tab task switcher, but that can't actually be used to switch to Bonsai, nor away from it (!!). And, again, it's too slow. (What's with the dramatic fade-out animation?)

Btw., you can drag a link on top of it (at least when option-space doesn't do something else already ;) and the cursor changes to identify a valid drop target, but when you drop, nothing happens.