Not bugs, but features. And frankly -- sorry to be short -- everything Chrome has (or doesn't yet). I and my colleagues use just about everything.

I see a lot of these things landing in the FFs landing in the last week, so I can't commend those efforts enough. Literally, I don't want to have to ever install Firebug; it makes the browsing experience even more sluggish. And I would have probably never started using FF, a decade ago, if it wasn't for the tooling, and I would have never had a chance to convince as many friends and family to use FF. The same reasons I will just recommend Chrome, today.

Frankly, you will have to have something that Chrome doesn't to bring us back, and it's been a long time coming for the tooling to be even on par. Again, I commend your efforts, because I think your community involvement and dev blogs are really great.