Replace the M21/28 Thompson with the Johnson LMG in the US paratrooper box. Right now the 501st Para. inf. regiment has the ability to equip two Thopsons (one from the start and one from the box), which wouldn’t be that much of a problem if they didn’t share the same ammo, unusrprisingly.
The option of equiping the M21/28 thompson also makes the M1A1 Para, the actual main weapon of that squad, next to useless when you compare those two to each other. The only thing that makes the Para-Thompson useful is the fact that you only get three of the M21/28s.
I once made a big suggestion on all the paratrooper squads, to make them distinctive from each other, while, if possible, assigning “national” weapons to certain squads and also compensating for their lacking performance in close or long range combat:
Unfortunately, people don’t wanna read, I guess, and the topic died.