The problem with Grens is that, in CoH1 terms, are just 4 man volks squads that can only be upgraded with the LMG that no one ever used. An army based on volks was not a good strategy in CoH1. (You at least needed medic necromancy to turn them into Grens. ) As such, armies based on Grens aren't that strong.
I mean, they're balanced with conscripts.
Panzergrenadiers would've taken the role of CoH1 grenadiers but they come with StGs already which makes them unreliable at range, which drops the burden back down on Grenadiers. It makes me wish the stats and upgrades of panzergrenadiers and stormtroopers were swapped, save for the camo. I'd gladly pay for StGs if I wasn't always forced to close distances with the squad. Once they got their vet and became a bit more durable I could THEN make them take on an assault role.
This is one of the more intelligent posts I've seen regarding the Ost infantry dilemma.
IMO PzGrens should have been a hardy 3 man G43 unit with smoke/stick grenades that can repair vehicles, and there should have been a 250 Halftrack in their tier. (Or 251 should've been open top.)