My only suggestions is to make it so one can approve profile images through the backend without having to go through the frontend module. The other, and it will probably come in due time, is to add Jim PM to their PM integration lists.
One other thing I'd like to see is the ability to make the frontpage calendar module have it's own ministylesheet. I'm using the NightMoves template by PixelBunniP and the background for the modules is by default transparent, resulting in an unreadable calendar module. Looking at the Events Style, I see no option to edit this, and doing a flat "all modules have this background" looks odd.
All in all, I highly suggest this module to anyone looking for a simple and easy to use calendar for their group.