Team modules
What if we could have Team Modules; i.e. modules associated with a team rather than an individual player? Two examples I can think of would be some sort of advanced information sharing or increased visibility of objects on the cmdrs map for all players on a team, and some sort of advanced energy pooling, allowing all players on a team to share energy. Basically they are a power that helps a team as a whole.
Not sure how Team Modules would be selected or enabled, but maybe you have some ideas.