@KurtGodel7 I agree on not allowing Heavy Tanks a blitz move, I didn’t give it to them in my mod either. But the Medium not having it strikes me as a mistake.
If the only unit in your game that can blitz is a 1 defense light tank, then blitzing is hardly even a useful ability to have at all - they just get left exposed and easily destroyed by a counterattack on your opponent’s turns. Even one lone infantryman has a 50/50 shot at killing the light tank.
Infantry + Field Gun attacks at a 2 + 2 and defends at 3 +2 , while Infantry + Light Tank attacks at 2 + 1 and defends at 2 + 1. So the Light Tank is a loser both on offense and defense vs the Field Gun, and the extra speed isn’t making up for it if the unit is too weak to do anything once it has to fight. The only units a Light Tank can attack with an advantage at all are an unsupported AT Gun or another Light Tank.
If you think the Light Tank ends up too strong from my proposal, you could nerf it by giving the AT Gun that debuff bonus against it as well (but you could balance it making tanks and AT guns debuff enemy light tanks on a 1:1 basis, since the AT gun will be a common filler unit).