Aye, always check a Soviet players base periodically! Gives you a good idea on their build and what route they might be taking.
Just throwing this out there, as two alternative Ostheer solutions, I've used them vs normal Soviet builds of 4 cons and USF, but never straight out 5/6 con spam, so word of warning that these aren't exactly tested and I haven't played much recently as i'd like, but here is two doctrinal options I think might be worth trying out if your really stuck.
Jaeger infantry, 3-4 grens, 2 hmgs, and use the doctrinal camo at one CP for your HMG's, at 30 munitions, it increases their damage when they fire from cloak and combined with their hold fire ability, you'd be surprised at how many times you'll catch people charging your grens when they don't see a HMG in the back, even after you pull the trick the 1st time. Plus it evens out the odds a little, opponets will still flank and you'll have to predict that/use map awareness, but at the same time, they have to guess where your HMG's are, and whilst they may have some idea, flanking what you can't see is...tricky
And at vet 1, incendiary rounds which are dirt cheap (15 muni) and camo bonus gets pretty hilarious.
The other one I've dabbled with is extended t1 play again and throwing in a stormtrooper squad at 2cp using the encirclement doctrine, without the assault package (100 muni), they are essentially overpriced Grens, but if you get them and have the munitions, one squad upgraded is like an Ostheer elite AI squad that does not need tech (i.e. rare). Stick them near your MG42, wait for the flank, uncloak very close up, pop the ability and you wipe a full squad in just over the time it takes them to throw a molotov.
That is pretty expensive though munitions wise and i'm on the fence, but they do one job very well, and that is clearing out Conscripts in no time.
Just my 2 cents, again, they need more testing by someone with the time, but if your stuck and want to try something new...