Eh, other then VOLKS + shreck problem the faction is pretty balance. I would even argue they Need a new infantry unit with dedicated AT to compensate for the lack of Shreck doom blobs.
Guest matter of opinion, I think the German regular army is spot on in terms of balance. If anything I would argue it's the best example out of the lot of army's on how a good all around army it is. They dont lack anything.
New, old was filled with either gimmicks, broken units (both up and Op) and extremely poor tier design.
New OKW isn't perfect, however it's a step in the right direction, I would maybe tinker with the tier truck units just to maximize use during "their time" and other then the VOLKS problem they seem right on the spot.
Honestly other then MINOR adjustments it's a fine faction, I would like to see the VOLKS meta be gone it's really the last thing of old OKW that needs to get axe, I am assuming RELIC waiting after ELS to finally deal with the VOLKS problem, which is fine for a temporary stop gap allie light vechial fix for now...