I don't have the code in front of me, but it's very possible that this is completely impractical to code, due to the way the turn scripts are run. It might require splitting a turn script or changing script orders, which is basically not going to happen.
all turn changes run a series of function calls. reordering the function calls is child's play.
the problem is that each function currently calls too many actions. if you split up the functions into singular "functions", as they should be, it will be much easier to control things like monster spawns, starvation effects, etc.
