rather than making heli slow when capacity reached, make the helicopters speed buff inverse to the amount of troops carried, so it's a gradual decay
#helicopter buff
foggy tide
raven scaffold
two things going on with helis:
- how much can fit in a helicopter
- how fast a helicopter goes while carrying a certain amount of stuff
imagine a helicopter could carry 10 soldiers but you have 11 soldiers. one soldier can't fit and slows the force down to its speed. that how the game works now, and its unavoidable.
now imagine you have 5 soldiers. currently (assuming the same 10-soldier capacity of helicopters), the helicopter would be at half capacity/weight. it does make sense that it should go faster in this case.
or, realistically, the helicopter capacity could be raised while reducing the speed near the new capacity 