I would like a record/replay feature for AJAX requests or at least an interface where I could easily assemble a request as if it was sent from the current app.

I would like a record/replay feature for AJAX requests or at least an interface where I could easily assemble a request as if it was sent from the current app. A possible "exporter" for the changes you made on the current web page would help some people I know, specially with CSS stuff. Some integration with MDN documentation would also be a boon, like right-clicking a function and seeing the docs. Like Lisp HyperSpec gizmo. I don't think that the inclusion of dev tools is cluttering or bloating. We should always include them even if the final user never uses it. The potential for a free tweekable web is there. Lots of people start learning more about webmaking by trying stuff on web consoles. PS: On saturday I will be a speaker on the largest Javascript event in Rio de Janeiro (http://riojs.org http://riojs.org). I will be speaking about Firefox OS (I am a mozillian volunteer) and I will be showing all my stuff using the current devtools from the responsive design view to the web console, so BIG THANKS to @paulrouget and the team for making my life easier!