The game must be more developed in social way. Players relations is important for corporations' development than battles themselves, communication, real-world hierarchy simulation. This steps are those that will make this game more credible. More complex corporation hierarchy. Why don't you introduce creation of character engine that we use in EVE? This suits portraits make us equal; no difference, no personality just a drop suit picture, I think people agree. Yes corporate tax and PC are good ones but they are just systematical changes. Open world market where to sell and to buy actions, obligations, equipment even corporations could be just huge place for interaction. If someone borrowed money from you or your corporation and can't pay the debt up-date you are in full rights to request corporation or belongings of the players. If player/s don't obey they get into prison. And then your friends or/and corp-members can launch an attack on a prison or just pay ransom. Why not? Districts that posses prison, where you must protect prison and inmates within and not the district from the attack. I have lately told that an orbital station infiltration or Titan infiltrations would be a great ideas for missions as events and would affect EVE players as loss of their equipment or temporary unavailability.

Rome wasn't built in a day... but many days have passed already.