That has more to do that these units are quite bad. the puma is a rather subpar tank hunter if you compare it to the m10. the okw track? a joke compared to any other track and the maphack is overrated because you know the okw player is maphacking.
Are you serious?
Jpz4 counter any USF armor (minus Pershing maybe)
Puma counter USF T1 and Stuart (microplay) and outrange Sherman
Half-track is a good support unit, its defensive role lead you to push with your sturm and deploy it on the conquered territory to stop the counter attack.
Not to mention that all those units are greatly helped by camo raketen giving extra vision if positioned in front.
The problem with OKW, is that like other armies you need to use combined arms, but for whatever reason OKW players doesn't want to play with their medium and light units. Do you remember that was Relic Goal when they nerfed the Call-in system? Giving more room to T2/T3 light/medium units for all factions. Buta s per today OKW is the only faction that doesn't build anything from their T2 before their Pz4 or Panther.
So you can argue that rifleflam are strong but if you don't even try to build their natural counter = HT or Luchs, you're not going to win anyway!
From my experience and what I see, 1st OKW players have greater chance to win if they use a Kubel at start and micro it well. And second they also have better chance to win when they deploy a HT/luch as medium to counter rifles before the Pz4.
My opinion is there is not need to buff what is overuse today but make the other side of OKW army more accessible to combined strategy. I understand the fuel is the issue here so the redesign is problem around here to be done.