How about having a more detailed and in-depth description of the faction on the ID info card? You can get descriptions of the factions from your rep sheet but its too vague. In order to learn about a faction through rumors you have to spend time and credits and alter your reputation to something you may not have wanted in the first place, which is maybe why people dont bother researching a role to play. However if you put a description of faction history and interests on the ID, along with the rules you must follow when that ID is equipped you might have a more accessible and easy reference for new role players. This might be problematic if there is a character limit on the info cards, I don't know.
And I agree with Dab about the equipment. An even distribution of weaponry and equipment throughout the factions would give people more reason to play into their roles more completely. Class 9 weaponry designed with specific factions, or groups of factions is a start, but also an even distribution of ship classes would be even better. Liberty has too many ship types compared to the other houses for example.