2) M3 -Remove requirement to tech Weapon Racks. Double fuel investment for a fragile moving weapons rack is a big turnoff. Alternative is PIAT from M3 is Elite Piat (balance cost as needed)
Imagine if one ever gets abandoned and captured by germans, all those vickers and piats in german hands.
What I mean is that I'm pretty sure this is one of the reasons why weapon drops still have the tech requirement, unlike the usf lmg. Also, while the usf lmg doesn't need to be unlocked it doesn't supplement the bar or zook, while the vickers + piat drop pretty much supplements the default bren + piat drop.
Additionally the M3 has an insanely large reinforce radius at vet3 and thanks to shared veterancy it's not that hard to achieve, negating any fragility. Both pio squads on this image stand on the very edge of those HT's reinforcement radius.