So many problems have persisted from the issues related to squad spacing that there's really no way to gauge how much those changes will impact the game.
Balancing units around a problem that is being fixed doesn't seem like there is much foresight being taken.
While I see your point, I do think it's worth making sure early vehicle squad wipes are D-E-D such that if anything turns out underpowered, they can buff them back by
anything that will not in any way go back toward wiping squads in like three shots. Price reductions, speed, acceleration, vet requirements, MG DPS, target size, etc. I personally doubt any vehicles had their main guns nerfed so much such that they deserve a buff to improve their AI, but certainly MG buffs would do it fine for any that turn out to need better AI.