You are hard pressed I suspect to sustain 37 tank corps at even near full strength after the Nov 43 TO&E change. That's 7,300 medium tanks alone. Your truck fleet will struggle to supply it as well. That's why in this case I would not build any SU brigades, you'll simply make a bad supply situation worse. Depending on numbers, I'd disband the lowest 10 in terms of medium tanks immediately. Also, it's not clear what portion of your air force is in the reserves, but all LBs should be there except in the summer. I don't recommend flying anything but tac bombers after 1942 anyways. Just more burning of trucks otherwise.
Yeah, I had over 3,500 M41s in the pool before the change. Now all medium tanks are down to 600. Over 1000 heavy though. . I have 331 off map armor units with 10,500 AFVs. I plan to start disbanding those first.
Trucks is what worries me. I have 449,000. The need this turn is 233,000 on map and 383,000 in units for a total of 616,000 needed. I slowed down the winter offensive everywhere but the Ukraine to get the on map need under 200,000. Last turn I lost 4000. Do air units sitting on the rail burn through many truck?
I agree 100% on the LB. The are most are disbanded and the rest are in the pool. I have started to disband the low moral fighter units to try to keep the air force under 27,000.