Well, I've played the demo for a long time, and decided it was finally time to buy the full version and of course I am amazed, excellent game. So, anyway, I figured I would post what I would like to see in the game. Lots of ideas and suggestions, some of which others also want.
-Entrenchments (Foxholes, Wire, Sandbags, Purchasable bunkers placed before starting a scenario. Tank Traps to funnel armor into ambushes and keep them off your infantry in a defense scenario. Foxholes could be dug by regular infantry at any time.)
-Engineer units to lay tank traps, wire and/or mines.
-Medics for wounded troops to bring them back to fighting status. Maybe medical Jeeps/Kubelwagons for faster medical support.
-Sniper unit, maybe attached to the recon squads. Provides extra spotting distance and deadly fire support, but have a lengthy time between firing, and not particularly tough. Very poor at close range. This would make recon squads much more effective and worthwhile.
-Halftracks or Bren Carriers troops could ride in.
-Air support for strafing runs or knocking out armor.
-Weather Conditions such as Rain, Snow, or Fog.
-Maybe some different or multiple objectives. Taking and holding a bridge, ambushing a convoy, searching and destroying enemy ackack. Cutting supply lines.
and of course what others suggested, a No Fire Command is essential, Multiplayer would be a blast, and maybe a bit more info on the status of your armor.