I can see a few different options<br/><br/>1 - Balanced: Each band gets a physical / mental / social specialist (or as close as can be managed) for flexibility<br/>2 - Player choice. You figure who you want to go with.<br/>3 - By interest.  Physical challenges (High/Medium/Low) Mental (H/M/L) Social (H/M/L) so adventures can fit the groups preference