There's quite a few Missions available on the server, some aren't played as often as others because of many reasons.
How about we implement a Missions of the Week system where 2 Missions are randomly selected for the game week that will reward players bonus score / money for that mission. On city change, 2 new missions will be selected and so on.
It can range anywhere between 1.2x to 1.5x the money and more score awarded.
We need a reason to enjoy more of the servers missions and features and I think this would be a great way to go about it.