I'd like to suggest that groups automatically formed by missions like Border and Hive Skirmish *not* automatically ungroup the PCs upon mission completion; it's a rather abrupt transition, especially if you are using voice comms, and lessens the after action camaraderie which help to make group missions fun.

Added this as a ticket, not sure what technical caveats there are, but we'll look into it.. 'tis a good idea, particularly due to voice chat.