I'll probably be submitting a patch for this one:

We used to use Spiceworks, but it was starting to give me an ulcer trying to do any kind of larger task tracking, and dealing with users submitting software issues to our IT helpdesk (no way to transfer tickets out of the system, so basically got to reply with "email redmine@ourdomain.com"). So I moved it to Redmine.

One thing that some people miss is the ability to get full ticket history on updates, so I'm interested in adding a checkbox on the "my accounts" page under "notifications" for "send me full issue history on issue update".

The only real difference is to send the entire issue history instead of the latest change.