So your advocating an air transport plane?
I prefer allowing airborne infantry dropped no further than 1 space from your own land forces, limited by # of Bombers. Therefore, a bomber can still perform any of its duties.
You also cannot have more than 6 at any one time and you can promote 1 infantry per turn max as airborne by paying 2 ipc.
In combat they fire at 3 1st round, 2 2nd round, and 1 any remaining rounds.
In game you designate them with HBG badge placed under unit.
Volkstrum units: Once Russia takes any areas adjacent to Germany proper, the German player may build a number of Volkstrum equal to a D6 each turn at the cost of 2 IPC each. They attack /defend 1/1 move 1
Russian Conscripts/Cadre units: same as Volkstrum, but Germany needs to recapture West Russia to activate start of production.
Of course adding Fighter-Bombers ( nobody called them “tactical bombers except harry Larris”)
Mech infantry with the following rule change: They may “tow” one artillery each so they move 2 spaces. ratio is 1to1
Panzer Grenadiers: 2-3 units, move 2, cost? limit 6 at one time
Soviet Shock Army: Combined Arms: any 2 armor units, you get one free roll of 3 or less. up to 6 on board at any time
Waffen SS Panzer Corps: Combined Arms: any 2 armor units, you get one free roll of 4 or less. up to 6 on board at any time
V-1/V-2 Cost 2 IPC each available starting turn X. These are USABLE rockets. They fire and you need to buy more. Procedure: buy them at 2 ipc each place within 2 spaces of where you want them to target, roll D4 result is damage in IPC, limited to total IPC of space they are attacking ( Attacks on UK is limited to 8 IPC)
Battle Cruiser: 4-4 move 2 ( one hit only) cost?
Light Carrier CVL 1 fighter capacity 0-1-2 units cost?
Marines: Japan and USA can build up to 6 marines each. They are designated from regular infantry, but attack at 2 for duration of combat…not keen on this, but they should be represented.