Both the (legacy) Soviets and the Germans are able to take (at least) two (free) Tiger IIs, Panthers, Tiger 1s/ IS-2s, and T-34-85s into the same battle.
The US can only use the M10 twice if they use the British Tank Squad and the 66th Arm. Brigade, not including premium tanks. Sure, you can use two Jumbos if you own the gold order tank, but they are only useful against Japan as long as they can’t spam the wood tank.
Now, with the latest update, the US has all of their 76mm tanks (except for the M10) and the 90mm Pershing tied to one squad.
Compared to this, the old 32nd Armored Regiment can only use the Jumbo, and it can’t even use the gold order Jumbo because this is only tied to the 66th Regiment.
So, I think it makes sense to allow legacy players to use the 32nd Armored Regiment to use more tanks in battle. Namely, all BRIV and V tanks by including those tanks in the squad.