What? Did you just say every Ostheer doctrine works? Only minimal micro required? No pressure?
4v4 or just rank > 5000?
Read my signature.
In the only game mode I play, as Ostheer, no doctrine truly disappoints me. Everything is good enough. Been using Festung Support recently. Mortar halftracks are really nice! Also, the halftrack, if kept alive, is awesome to back up your LMG Grenadiers with. I usually get 3 squads, and that its enough with a single HMG42 backing them. Every doctrine has some support power I can use. Luftwaffe can call in medical supplies, Encirclement can give them a mini-oorah that is hotkeyed rather badly, Close Air Support can give munitions for Fausts/LMG42s/Rifle Grenades, Festung Support can bring mobile mortar support, Relief Infantry can give me capture and reinforce fodder (Ostruppen Relief Infantry is actually one of my favourite powers and one of the most well kept secrets in the game. You don't feel the losses with a halftrack and artillery is the only way to stop it, which is a hard counter, but that's what the rest of your faction is for!).
LeFH slays 120mm mortars like no tomorrow in Counterbattery mode, and I like it a lot for that reason. Artillery Field Officer helps grenadiers a lot. Storm and Jaeger Infantry both have very good benefits, and since I use Halftracks already, Riegels are simply amazing and make life far easier for Pak 40.
Basically that starting combination works well with every doctrine adding a little something to it, so I don't need to change it around much. It's not rare that I get games where the heaviest thing I build is a halftrack, unless Pak43/Pak40/LeFH are heavier than that.
Ostheer is the best designed faction in my opinion and if I could, the only things I would buff would be Panzergrenadiers, Scout Car, Ostwind (just needs a bit of suppression to give it the oomph Flak Halftrack has for OKW) and Brümmbar, and then it's set.
Edit: I just saw your post, Tobis. Let me put it this way. I have almost all Ostheer doctrines and I tried them all to see what the fuss about Tiger was. I was really disappointed by none of them, and games are not frustrating when playing Ostheer. I genuinely had far more fun with Ostheer than I do with Soviets 90% of the time (Soviets have their moments, Urban Defense on Ettelbrück, 5 minute win by taking OKW base flak and giving it FHQ bonus), and not many things ever left me frustrated. (I still hate facing 120mm mortar!)
Ostheer is fun for me and if I were to spend another 600 hours in the game, it would be thanks to that faction. Recently I've been experimenting with avoiding the boring blobs (which I never really did anyway) by rushing to the fast OP stuka, hunkering down with a Pak43 and MG spam with my excess MP ,and then getting a Sturmtiger. Don't need more AT than Pak and my single Volks squad with shrek usually (if I do, my ally can come to my help, but Schwerer HQ does a fair bit against Allied mediums anyway), and I find Sturm to be one of the most fun units in the game. Killed an IS-2 today with it over the fog of war where the enemy could not have seen it. It got abandoned and me and my teammate let the enemy take them back so they wouldn't be discouraged even further (it was a game on Semoisky Winter with not much ground to stand on for Allies, obviously). We later even added eachother for rematches and found them to be pretty cool guys. Sturmtiger made us new friends. ^^