OH is just a support faction for OKW at this point, no secret about that.
Get OKW nerfed then, zero reason OKW should gain resources from caches besides the salvage system being too linear. Ost pulls its weight.
As for the thread, personally I prefer Relief Infantry. The resulting MP float (those who are moaning about Ostheer MP starvation, try this out) is immense and you're massively powerful with all the team weapons yoou pick up along the way. Just don't forget a Pak40, a halftrack, and an MG42; maybe a mortar, and then push with those picking up everything on the way. Of course artillery hardcounters this, so that's why I prefer Lightning War doctrine that can turn the MP float and amassed fuel thanks to not needing it much into Tigers. I once won a game where I lost 3 Tigers using this tactic. 7 Ostruppen squads in the end. Was amusing to have them take forever to kill an AT gun when focus firing from out of cover.