One thing we ran into while debugging a few weeks ago is lack of support in firefox for debugging open streams. That is a feature I would like to see implemented, because it works beautifully in chrome.

For me I am using firefox-esr with noscript, privacy badger, https-everywhere and vimium. I'm extremely happy with my web workflow.

Another thing for me is that firefox seems to be easier to lock up. Twice this week I had issues where firefox locked up. The first was trying to render a dropdown select with several thousand items (blame the prom explorer for that) and the second was rendering some graphs, which while not fast in chromium, certianly did not cause problems.

I shared this link earlier internally on slack because I think it makes a fair point that applies to many David-and-Goliath marketplaces, namely that "not" being Goliath isn't a compelling argument. Having a brand based around F.U.D. is an easy thing to slip into, but really Firefox and other small competitors should focus on beating the competition with features, not fud.