I find myself in the awkward situation of not being able to spend any diamonds because the "New Settlers" quest is still active. I cannot, however, finish this quest because I am maxed out on settlers!
The initial solution appeared to be to upgrade my Mayor's House, but I can't do that without some resources I can't get until level 18 (I'm about 10 right now).
So, I need either a way to kill/get rid of a few settlers so I can complete the quest, or I need another solution - if there is one?