Panzergrenadiers are micro-intensive units; arguably one of the toughest infantry units to utilize correctly. Having said that, I think this is fine considering LMG grens are fairly easy to micro. So the overall micro-burden of playing Ostheer does not get too high by incorporating one or two Pgren squads.
STG44 Stormtroopers are the best flanking unit in the game. Get behind the enemy -> activate their focus fire ability -> watch as they murder retreating squads. The Stormtroopers special ability is often overlooked (as is the paratroopers thompson focus fire ability). Again, not easy to use, but absolutely devastating when you pull it off.
+1