1) Zoning, road.
Who never have problem with magna as mayor, an anwanted magna com or rez. for me a color for magna seal could be a good idea.
A real color for civics, and white for destroy building.
Only mayor could make road, investissor dont need that. of course that could cause some prblm but ......
2) civics
I see only one thinks, a world with no OVERcivics, city take only city need.
EX : prez make 5 college lvl 20 if city need only 2 only could be at 100% HC LC MC