PTRS for conscripts are a fantastic upgrade.
But the commander lacks infantry to fight Obers, JLI, Falls, Grens w/LMG, PGrens, etc, and heavy tanks to fight Tigers, King Tigers, Jadgtiers, etc.
A commader specialized in fighting halftracks and medium tanks is just terrible for game modes above 1vs1.
You'd be surprised what 10 conscripts all upgraded with PTRS and AT nades can do when supporting armor/pushing on the battlefield for 2v2 and above. (I'll admit they're not the best vs AI on their own, but when supported by another player it's a different story)