How about I get a thread started up, and everyone post what they know or think are weaknesses and strengths. Examples of this: Stealth, Diplomacy, Protection, Assassination, Reclamation (of objects or artifacts), Reconnaisance, Peacekeeping, Retrieval (of individuals), Search and Destroy, Scouting, Tactics/Gameplan, Leadership, Clean Up, Healing/Medic.

If you can think of other things that should be listed, give that, as well. Then, we can build the groups especially for the missions, so that they're a success, but also returns members healthy, or as close to it as possible.