I'm not that familiar with 10v10, as I stated earlier, I can't get around not being able to control that many units, I feel asphyxiated.
But I'd recommend having volks deutche in a later phase too, because they increase a lot more in availability than the others, also bring in your A infantry in the fastest vehicle, you just want them on roads rushing forwards after all.
Later phases you'll still be using roads, but might be pushing across a plain where halftracks make more sense.
Don't bother with feldgenderarmie, their radius isn't enough to make them worth it, disheartened troops shouldn't be relied on anyway, get some more command if you want better infantry.
Also that's quite a lot of supply for not a lot of arty.
Your AT doesn't really make sense to me, why so many cards in A, especially in 10v10? You're just going to be holding a very small section, and on top of that surely if you're spending 500 points on AT alone in A, you're doing something wrong (and in 10v10 I don't think you can get too many points unless I'm mistaken).
BMW scouts I don't personally like, but I can respect a personal choice in that regard, I just find it hard to actually hide them somewhere good where infantry wouldn't just be 100 times better.
Also, get off map arty with that deck, it's really good to bail you out of trouble/set up an attack.