This is why they should be remade or improved. Literally every other infantry call in ability within the game you wouldn't mind having an extra one or two, wether its Shock Troops, Commandos, Paratroopers, JLI, Fallshirmjagers, every faction can benefit from having extra call in units.
Stormtroopers are not better than the stock option which is the problem. Grenadiers are just too good that you don't need anything else except more grenadiers which is why 4 Grenadiers and Spotting Scopes is basically the current meta for Whermacht. Since Grenadiers are better at anti-infantry and Panzer Grenadiers are better at anti-tank than StormTroopers there is literally no point to Storm Troopers other than a quick 1 time call-in or if you are trying to troll with Close the Pocket.
Not sure about the first part, Shocks and all other Soviet Elites are heavily outshined by reg Guards. Hell with SVT drops elites aren’t even needed. So Soviets don’t really need them unless you are playing Penals. Paratroopers are fairly rare now unless you suffered wipes because they don’t fit in the build and come rather late with horrible target size and Rangers are even rarer due to lack of abilities. I agree with the other faction especially OKW which is mostly due to VG scaling.
With regards to Stormtroopers, I agree Grens are too good for anyone to use anything else. PG are the fastest available Elite unit yet no one uses them unless their build is specifically focused around them. The other issue is a commander with ambush camo gives your mainline a close enough version of what you get with Storms especially if you put it on PG.
What do you think about giving them PG STG, it would make them feel more like an elite unit but maintaining their assaulting style. 4 STG might be to strong on spawn so maybe 2stg come equipped while the other 2 are a free upgrade but take some time to tech.