[Imp]

It might benefit from a cost recalcalculation esp if allow ammo trucks to resupply perhaps doubling cost in that case.
The new patch will I think make using arty harder as in tracking fast moving vehicles with it so it will not be as deadly.
Use sensible in house rules like only 1 in 3 troops can be cluster, probably makes more realistic as well .
Banning it does not make sense as its a major deterent which makes you use diffrent tactics because it is so dangerous to try & avoid or limit its effect.
They are also priority targets if onboard
For several countries in what ifs vs major powers they are the only easy kill weapon you have vs a MBT, maybe an ATGM to if you are lucky.