I want to see some sort of assault pioneer / heavy infantry unit with flammenwerfers and demolitions capability, not least as I had so much fun with them in Close Combat 3!
They should be hellish expensive, with no long range weapons (SMG) but lots of mines / nades / demo potential.
That's exactly what urban panzergrenadiers are- 5 men, 2 flamethrowers and 3 MP40s, 50muni satchel (identical to penal charges except cost, I think), 15 muni smoke nade. They can also build trenches. They don't cost that much either, 370MP I think