I can not wait for this but, I think that similar ideas have been instituted better in other games.
My main worry is that you will reach a wall. You will play, play, play and then you gain the final, fatal star. If you are good enough to get to 5 stars, you are good. When you get 5 stars, the whole team will come after you. This reminds me of an event in Tabula Rasa where you could kill General British. It was well enough intentioned but, what happened was awful. Everyone came. It became impossible to differentiate anything the screen was so filled with avatars, all hoping to get the killing blow. Due to the relatively small player count but, it could be a major pain to be a 5 star. All of the sense of being good would be replaced with a feeling of "Gee, I should be adequate so I do not get the whole team on my ass" This may come to be untrue, I may be just not getting something but this has me worried. Also, I think that Section 8 handled this very well. They had both teams going after missions. If team A was being trounced, the game would try to even the odds by having team A spawn a Commando and ask the rest of Team A help him. Team B would get a message saying that a Commando had spawned and to go and kill it. This would create points of contention and dynamically change the power, allowing the skill of one player to significantly help one player. Also, you would earn money but, everything that you purchased needed to be dropped in but none of your team mates could use them. This meant that you could not get a battle suite in the middle of a battle. You needed to get to safety so your cargo would not be destroyed before you could use it. I am worrying that someone will purchase a jet and blam, everyone is dead. I worry that someone would be able to dominate the other team. It might be that all this comes to nil and it might be that my two concerns cancel themselves out. Over all, I am stocked for this game.