I will certainly grant that our roadmap has never called for a "feature complete Firebug replacement". Our goal has been to explore new ideas while building out tools that we can ship with the browser. We're also working on improving Firefox's infrastructure for developer tools (a whole new JavaScript debugging interface is underway for SpiderMonkey, for example).
Mozilla has a lot going on and Firebug, for it's part, is an independent project with goals and plans of its own. I wrote about this a bit here:
Mozilla has a lot going on and Firebug, for it's part, is an independent project with goals and plans of its own. I wrote about this a bit here:
http://blog.mozilla.com/devtools/2011/05/25/the-relationship...
Mozilla's developer tools work has been steadily increasing this year, and you'll start seeing a good deal more communication about what we're up to.
Kevin (product manager for Mozilla's developer tools)