Ambush Camouflage and G43 package are sureley not "highly impactful abilities".
Without CAS the Doctrine is mediocre and will not be used anymore.
I'll admit my Wehrmacht is my worst faction, but I find good use out of G43 Pgrens (and I don't hate patch G43 Grens but I also hate Grens so that might just be me being a shitter.) and Ambush Camo is severely underrated across all factions imo, especially in the late game. Even if they aren't the backbreaking best abilities in the doctrine compared to other factions meta doctrines that usually have 1 or 2 useless to underwhelming abilities.
The real draw of Jaeger Infantry is the 5 Man terminator Gren and Light Artillery Barrage. I kind of doubt that removing CAS would make the doctrine irrelevant since it would still have 2 of the best abilities in the entire faction propping the doctrine up with 2 fairly strong supporting abilities.
My question is when compared to the other Ost doctrines you're either looking to replace Grens with Ass Grens/Ostruppen or you have Blitzkrieg/Spearhead/Lightning War with 1 Great ability, 2-3 serviceable well rounded abilities and some useless trash. Hence why Jaeger Infantry just towers over these in pickrate since you get the Turbo Grens, LAB, Stuka Cas for hyper impact, and a couple serviceable abilities in G43 Pgrens and Ambush camo.
Also German Infantry seems like it fits into the B/SH/LW category too. it's still quite popular and that makes sense since you get a couple powerful abilities and can safely ignore the garbage that is VSL Grens, instead opting for 5 Man pios for that sweet repair rate buff. Only real miss is the Mortar Halftrack.
Because the doctrine is barely revelant with grenadiers mg42 being meta and no tanks call in/scopes
1v1 btw. Also G43's are for Pgrens and I said above I quite like the patch G43 Grens but that could just be me being a turd. Regardless there is some merit to this being the clear favorite doctrine by just about everyone playing Ost and it seems a bit stronger than it's competition. I've seen a couple uses of 222 Spotting Scopes but for all it's vision it seems a bit underwhelming to me since the Doctrines outside of that are kind of empty and the 222 has pretty good vision already (Not to mention if you lose your 222 you're basically firing a blank on your doctrine for the rest of the game unless you rebuild it.)