My gaming group is thinking about restarting our long-slumbering Battletech campaign, in which we play a group of mercenaries known as the Hellfire Aces. In the campaign's earlier iteration, we didn't go much deeper than that -- we were the Aces, we were for hire, and we blew things up. This time around we're looking to add a role-playing component to turn it into more than just a a fragfest between giant robots.