If the nightly beta is like firefox preview then it's too early for it.

1) addons don't work yet

2) sharing of media files doesn't work https://github.com/mozilla-mobile/fenix/issues/3621

3) you can't add exceptions for ssl certificates https://github.com/mozilla-mobile/fenix/issues/1168

And it's all in all more buggy then firefox for me....

I really welcome a new approach, but since in my extensive testing it performed as bad as firefox and had more crashes it will more or less force me either to stick to an older firefox release (mask updates) or use a different browser (maybe install gecko as html framework and use lightning or something)

Edit: formatting and added conclusion