As much as i like to have more maps i encountered several problems. The thing is that the HQ areas are just too small. If you place a building "incorrect" you maybe have not enough space to build the Sturm Armoury or the Panzer Command. Keep this in mind if you play them. My enemy had to destroy one building for having space for the Panzer Command and i had to destroy the Weapon Support Center to build the Tank Depot.
It happend on 2 maps. "Wrecked Train" seems fine.