I think the changes are ineffective : CP is an irrelevant changes, since you have the tech and ressources to get the heavy tank around 11-12 CPs.
5) OKW changes
Problem is well known. Falls are the best infantry unit in the game, can counter everything, can cloack etc.... removing panzerfaust is a good step, but elite infantry costing the same as Obers at 2 CP, that can paradrop and cloack ambush? definitely a no. Falls is elite infantry and should be tied to t4 as Obers are. Locking the upgrade at T4 isn't effective enough.
Halftrack changes are a good idea : a cheap spotting ability, cannot hide as much anymore.
Sorry for long post, hope it helps the balance team
Agree about the heavy tanks. I have said this so many times recently. Changing the CP requirement to 11 is almost completely meaningless for 2v2 because LV + tech+ 230 fuel for heavy tank doesn't come earlier than 10-13 CP unless the game is super one-sided and one side has an insane resource income. So no the 11 CP change will fix nothing.
I would even go as far as saying making heavy tanks 15 CP + all tech wouldn't change much because heavy tanks are absurdly op right now. Their infantry killing capacity is just too high while at the same time rendering medium and premium medium tanks useless. Unless heavy tanks are nerfed we will continue seeing them every game. Maybe a few minutes later than now but that will be the only difference.
Regarding Fallschirmjäger, I really disagree. They should be fine once the snare is removed. We shouldn't forget Shocks, Guards and Rangers all come at 2 CP and are even stronger than Falls for a while because they don't have their weapons locked behind T4.
Especially Shocks are way more powerful at 2 CP because of how little damage regular infantry can do to them. They basically render Volks and Grens useless on certain maps. At least Rangers can be killed easier but Shocks are just cancer IMO.