The creation of a need to OKW tech changes was pointed out when the USF tech revamp went forward.
Then you will have to nerf these units as one has to do with USF units because these factions where designed to be played with a limited roster and units that are OP because of it.
The trend of making powerful unit available earlier is messing with pace of the game and this start to show. Many unit unit are cost efficient but do not get used simply because their window of opportunity is to small.
So what's the problem?
OKW will need to be nerfed at the end, its precisely what you suggest in every balance thread - nerfs.
You'll finally get what you constantly advocate for and you're still unhappy?
Imo you should start delaying many unit and increase the window of opportunity for unit give return for their investment.
In the case of OKW one could try lowering the cost for setting up T2 so that one can have access to faust at the same time but delay vehicles by locking them behind tech like repair engineers. That would also require similar adjustments to allied vehicles also.
That lowers window of opportunity for M3 and WC51.
You can't "increase window of opportunity" by decreasing it for other units.
For someone who tried to berate ME on importance of timing, you seem to be completely oblivious to what changes like that would inflict on balance.