The best way to make people play in my opinion would be to make the game fun to play, so that people come back to play the flipping game and not for some superficial rewards.
Bring a server browser and more importantly persistent servers. Make it possible to play together with more than three of your friends. Give us squad management features. This alone would go a LONG way to make people play the game, regardless of the battlepass content or some 'missions'.
EDIT: Oh yes, and I forgot: fix the hitreg. This was making me quit the game yesterday. There was basically ZERO hitreg on some enemies, even with decent aim and the crosshair on target I could empty half a mag and they could turn around and kill me in one hit (not even a headshot). Once or twice I could stomac maybe, but this happened over and over again yesterday.
