Giving the healers a piece of equipment that would allow them to "telegrab" items on the ground when all health is full or above 90-95% would be a useful addition. Also allowing items to be bought by double clicks at the store.
A small not even necessary suggestion since I see you're so active in the comments: A display of XP/Gold per minute that you could toggle on/off to see where is the best to farm.
Was pretty fun, played all 4 levels. When you switch your car the AI's use the same car as you. More levels and more cars would make a 2nd version of this game much better.
Really good game, needs a lot of tweeks though. For example churches don't always improve the religious rating. Also if you have a building selected to build and than hit the arrow keys to move it will reset to the normal cursor rather than the build building.
 "Idle Raiders"){kind=icon}
 "Game Corp"){kind=icon}
 "So you think you can BLINK ?"){kind=icon}
 "Moto Trial Fest 2"){kind=icon}
 "Break Fail"){kind=icon}
 "Coast Runners"){kind=icon}
 "Cool Racing 2 - Black Gold Fever"){kind=icon}
 "Smart Car Drive"){kind=icon}
 "Gay Test"){kind=icon}
 "Monster Truck Racing"){kind=icon}
 "Bubble Tanks Tower Defense"){kind=icon}
 "Big Al's Big Trash Round Up"){kind=icon}
 "Kingdoms: Nobility"){kind=icon}
 "Penguin Massacre"){kind=icon}
 "Mini Putt"){kind=icon}
 "Trap Master"){kind=icon}
 "Adventurous Eric"){kind=icon}
 "Elona Shooter"){kind=icon}
 "Monsta Truk"){kind=icon}