From my point of view, the solution is easy. Make the 5 core infantry the same: 5-men squad, dealing the same damage with rifles, same accuracy and RA. Maybe cons could be 6-men squad.
Wouldn't this extreme type of homogenisation just throw infantry tactics completely under the bus?
Let me explain:
- Currently, there is no such thing as "high damage infantry" or "low damage infantry"
- Instead, when you compare two infantry types, you have one type that is comparatively better at long range, and the other type that's comparatively better at close-range
- The guy with the close-range infantry will have to find a way to close the gap, or they will be bled hard
- Alternatively, the guy with the long-range infantry has to do their best to maintain that gap
If infantry is changed so that it deals comparatively the same amount of damage at all ranges, picking the range won't matter at all. What's worse, if at any point the defender gets the benefit of green cover, there is no way they will every be able to be pushed back by the attacker, which has to struggle with:
- (potentially) inferior cover on the way
- Moving inaccuracy
Thus, all infantry combat will devolve to "camp my units behind green cover, and don't bother about moving". That's because whoever moves first will lose the engagement.