PzGrenadiers are beasts. Their only problem is that you have to get Grenadiers before you get them as you can't do a T2 start, and that moves them from alternative great early elite infantry that wreck everyone from cover to situational elite infantry or Panzerschreck carriers.
Oh and that their G43 upgrade is a waste of a squad and also a munitions sink.
Not true.
Im not making Grens for a long time.
Engi, Engi, MG, MG and then whatever you need: more Engi, MG, Mortars.... Upgrade Engis with Flamers, keep them covered by MG and then call for PzGrens.