Keep the company as is. Small is better, imo. That keeps the crew within arms reach of the players. Plus, the owners, operators, antagonists, etc, understand exactly what is going on since their hands are dirty in all things Aces High each and every day.
As far as game changes...
1> Different hardness settings for different OBJ. The 312 lbs base for so many of the day to day OBJ is a bit over simplified, imo.
2> Change the damage to the HQ so that it is scaled. Currently, it is all or none. I think there should be some in between damage (no dots, but dar bars available, etc)
3> Ammo and troops damage to should be scaled like the fuel. The "all or none" is a bit much, imo.
4> Mix up the troop carries so that each has its own benefit. Meaning- let the C47 carry 16 troops, the LVT2 12, the M3 and SdKfz/251 carry 10, etc. Keep the capture threshold at 10, but mix it up!
5> Let there be about 4 variations of each map. Meaning- swap out bases long the front so the dynamics change.