Sense this just came out I don't know how it fully works. However, I did the math and if you get a perfect 10 score on every mission (As a raider) you cannot max the adventure bar. Forcing players to play antag which a lot of players do not enjoy doing. That's if you even get a perfect 10 score. As a raider I had a team that did not die, did the mission incredibly fast, and I was the featured player and I still only got a 9.8 score.
I believe to make this system better is make it easier for people to get a 10 score whenever they are the featured player OR make it to were the score resets before the end of the month. Maybe half way through the month or a couple of weeks. That way players aren't forced to play antag missions.