Some of us tired of playing the same map(s) again and again but if you can bring back the old mission system and set to play the old map(s) or what ever you want to set we will play it and that would be nice "OG's" in the game will feel the nostalgic feelings and new players can experience the old map(s) that they didn't even know that it's already exist waiting to be played in the game. 

Pros: Old Map's can be played again and etc.

Cons? Nah, bro stop complaining let's make the game more nicer and playable.