So I would love to be able to use the developer tools - but for me they're still not quite there (but getting close). Here's some things Id like to see, and then I think I could change over from chromes devtools completely, wonder what other devs think?
1. speed (becoming less of a problem)
2. edit html in elements inspector, also dynamically creating styles: - What I like about chromes devtools is the fact that I can completly alter my html page via the elements panel (styles and html) very fast, also auto-expanding to the selected element and seeing its surroundings is nice.
3. network panel still not as good as chromes (imho) - mainly because I cant enlarge the detailed inspection of each listed http request.
4. too intrusive (popups for javascript editor) - make it more compact and use less space, also I like tabs (that are optionally detachable) instead of windows.
And thats it, these are the only reasons for me personally, why I dont use firefox as my development browser of choice.
But again Id like to say the work the mozilla devteam is putting into the devtools makes me think its just a matter of time until I can finally go back to mozilla :)