The vehicle setup per unit is not balanced and is detrimental to good gameplay.
TLDR It is my opinion that the maximum amount of armored assets should be 4, there is absolutely no reason to need more than 4 armored vehicles. It would also be nice to have 3 logis standard again.
Before faction voting, on a typical map layer most factions had 1 MBT and either 2 APCs or an APC and an IFV. Usually the maximum amount of armored vehicles was 4, except for special layers like Tallil Tanks. This made it so the armor wasnt overbearing on the infantry. The infantry also got 3 logis standard.
After faction voting, combined arms units lose a logi for an extra APC. Some units are ridiculous like the US Stryker Brigade having 7 armored units requiring a minimum of 14 crewmen to make full use of the faction. This takes away from the infantry gameplay by hyperfocusing on vehicle gameplay and needing to take more than a full squads worth of players to keep it running.
Another thing I dont like is the reduction of logis. The reduction from 3 to 2 logis is significant and cannot be understated. If for any reason those 2 logis are abandoned or ambushed, your team is generally SOL. It also makes it difficult to keep up supplies and most games involve struggling to keep FOBs topped off and commonly limiting the team to a single attack and defense FOB. The only factions that easily does logistics is the IMF and Insurgents who can have anywhere between 5 and 6 logistics vehicles for their units, which makes some sense due to a lack of a helicopter, but does not excuse the massive gap.