I've done a lot of Windows development myself. If people are genuinely interested in an Outlook add-in for doing action plans, please let me know. Although I think that an application 110% focused on RE is ultimately the better solution (provided it is done right), you can't deny the fact that Outlook has a huge and well an exceptionally well-established user base. The good thing is that you could probably put something together in a relatively short time-frame. If you have ideas or interest, feel free to email directly via the board.
Thanks!