My last Suggestion really...So far I've suggested M20 Light Scout Vehicle and 210mm Nebelwerfer.
The last Suggestion is simplier than all the others and suits for Allied Infantry Doctorine.
US Marines.
Rather than have All Mortars Vet up at vet 1 Lock And Loaded would allow a New infantry unit to be unlocked.
This is pretty much same like the Airborne Riflemen.
These would be basically Riflemen with more health, heroic Armor and a fireup. They would be Priced Accordingly of course. Their stats would be close to Rangers in combat (M1 Garands) Voice Actors same too.
For Skins. I think we can Borrow Lt.Apollo's Historical Marine Skins
http://companyofheroes.filefront.com/file/Historical_Marine_Corps_Skin_Pack%3B92568Smaller Idea than all the others but...I let others be the judges.
More Detailed:6 Man Squad with new Skin.
5 Riflemen with M1 Garands. 1 Leader with Thompson.
Heroic Armor. Ranger Health.1 Upgrade. B.A.Rs. 1 Man with Thompson, 2 Men with BARs 3 men with M1 Garands.
2 Upgrade. Flamethrower. 1 Man with Thompson. 4 Men with M1 Garands. 1 Man with Flamethrower (Engineer Flamer stats)
3 Upgrade. Bazookas. 1 Man with Thompson. 3 Men with M1 Garands. 2 Men with Bazooka.
Abilities: Fire Up
CostUnit 300 Manpower.
Weapons:Flamethrower 70 Munition. Comes in a Good platform great at assaulting enemy positions. Makes the unit an excelent Assault unit
Pineapple Grenade. 40 munition. Toss it in to flush enemy troops out from buildings
Smoke grenade. 15 mun. Run toward the machinegun, toss this to block their sight to throw a nade and flush them out with the flamethrower!
BAR. 90 Munition Supress the Enemy troops and hold them off with Browning Automatic Rifles. Makes them a useful Support unit
Bazookas. 90 munition Fire at Enemy tanks to destroy them. Makes squad an excelent Tank Buster
Note: You can not have Flamethrower, BAR or Bazooka at the same time, player has to choose from either of those.All in one. A Riflemen squad with Elite Armor and more abilities. Basically and ability to flexible it to different roles.