At the beginning of winter 1942-43, the 11th Army (the southernmost German army, typically) HQ withdraws. This leaves three German corps assigned by default to Army Group South. What is the best thing to do with these corps?
Keep them assigned to AGS, perhaps moving the AGS HQ closer to the front so it can support them? AGS is grossly overloaded and probably would fail leadership checks anyway, even if it was within 5 hexes of the corps HQ's.
Assign them to neighboring German armies. There are two, 6th Army to the north and 1st Panzer Army refitting behind the lines. Both armies would be overloaded, 6th worse than 1st. If I divided them between the two armies, I would fear that would reduce their ability to support each other in the face of a Russian offensive that I think is coming. If I assign them to 1st Panzer Army, this would reduce the armored force's ability to react to attacks elsewhere along the line (since the army HQ would end up a long way away from the infantry corps).
Assign them to a Romanian Army, perhaps assigning that Romanian Army to AGS. Expensive in AP, but I have plenty. The Romanian leaders are unimpressive, to say the least. What effect would this have on SU assignment? I'm doing the thing where all lower HQ's are set to 0 SU allocation and I assign SU each turn where I think I need them (either just before an attack or at the end of the turn). Would this screw up my system somehow?