There are 2 bugs which I have been paying some attention to recently.
The first one is Bug 222861 which requests that images are displayed when they are mentioned in comments. This bug was important to me because I often found myself and others referring to images and attachments in comments and then having to open them up in a new window. I really wanted developers to just see the mocks i made along with my comments about them. It was determined that this bug makes more sense as an extension. So I wrote one. I've posted it here: http://github.com/pyrzak/Bugzilla-Extension--Inline-Images. Hopefully you guys like it!
The second one is Bug 395802 which requests to be able to support gravatar images. This is something Aza Raskin specifically mentioned by saying make it easier to know "who is this guy". Step 1 is adding a human face to a comment via the gravatar, Step 2 might be about grabbing their stats.
My hope is that we're finally to the point where many of Aza's and other's ideas might be possible thanks to the new extension system and the jsonp bug 550727. Both of which wouldn't be possible if mkanat didn't work so hard to add this kind of mash-up and extensibility, so thanks!
Any feedback about either of these extensions or anything else I mentioned is very welcomed.