Here’s the email I got:
Any feedback, wish lists, comments etc would be greatly appreciated as we are looking to build tools that will serve the development community as well as possible. This will obviously be a multi stage project. We probably can’t produce something that has everything Firebug has and more from day one (especially with Yahoo also now committing resources on it), but we will advance the tools as time goes on, with the most needed features addressed first.
So tell me, what do you use? I will point the Norwegians here to get info outside the office and who knows, maybe your submission will make Opera a joy to debug with!