An eclipse/mylyn task connector plugin for the project management addon would be killer!
Eclipse, the open source code editor, has a mylyn task connector plugin that works with Mantis, bugzilla and many others. Mylyn tasks has a couple of features that I really love. 1 Focus on active task, which remembers which project and which files you are working on for any given task. 2) It keeps track of the time spent in the editor and updates the task automatically, which can be useful at times.