While the group window is nicely arranged and all, it's fricking tiny, you can only see a handful of items, and many of the options for roles scroll off the window so you can't see what they actually are. It would be nice if you could resize the window and have the lists get bigger as a result, so that you can see more entries in them.
The group options do however rock very nicely as far as group options go.
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Note: Don't reply with "make the interface size bigger you goit" as that's not the problem, I can read the writing fine, it's just that any group action seems to involve a lot of scrolling to get anywhere.