First I want to say how much I enjoy this game, and how addictive I find it. After playing it for a couple of weeks these thoughts came to mind;
Put a function to resell you apparatus if you want to upgrade instead of destroying it. This should also include buildings. To keep the abuse to a minimum, only have a resale value of 50% of the market price. Makes more sense than what we have now.
This has been talked about before but having "wild fires" in the rural area's that require "brush" and "grass" trucks would be great. The addition of alliance major forrest fires would be good too.
In the rural area's here in FL it is not unusal to have "life flights" available. The game seems to limit you to 4 helo's. Having the number of life flight helo's tied to number of stations or if a way could be found area supported by the player. An alternative would be joining an alliance gives you an aditional helo.
Have the ability to "fly" SWAT teams to Alliance events. (G-7's for the win)
Lastly, I know that this "free" game has to make money or there would be no reason for somebody to design and update it. I only have 1 issue with spending coins and that is transferring personal around local stations and transfering personal because you moved a truck. It doesn't bother me to spend coins when I move people to different fire departments or counties, but if I am moving people from one side of town to another, or paying to go back and get the crew of the transfered hazmat truck, that I take a small issue with.
Thanks for this part of the Forum and keep up the great work.