It would be absolutely awesome if each notification email gave me a complete summary of the issue being modified, all the issue's metadata, not just the limited subset of info that it currently provides.

At the very least, in every notification email I get I absolutely need to see the state of the issue being modified. The state of the issue determines whether or not I'm interested, and when watching a very active project (e.g. CONF) I get a large number of notification emails each day (I'm currently at ~200). Having to open up each issue in my browser to determine its state is a huge waste of time (and leaves me with like 200 tabs open, cause I'm terrible at closing them).

Also, the label diffing is really confusing at times, because it's doing a text-based diff, and this diff can run across multiple labels. It would be much saner (and more useful) to see whole labels that were removed and added.