Copying from main thread:
I dislike the Grenadier reinforcement change because it homogenizes the factions. I also prefer when reinforcement costs are consistently 50% of the entity's initial cost.
So, instead, I'd recommend improving their cost-effectiveness by increasing their firepower. It has the added benefit of scaling control. You could increase rifle DPS for early game, or MG DPS for late.
Infantry sections reinforcement cost is already below 50%, please don’t make stuff up, IS would cost 34 to reinforce otherwise, and they are even more cost efficient with bolster
Infantry sections are not OP, so not having reinforcement cost at 50% divided by # of models is fine.