Profile of Protos Angelus

Echelons are natural zook carriers. Have smoke. They are quite good in cover short range. Not pioneers but still good. Sturmpies are OP close range. Echelons, due to their cheap price, are great squad for sneaky recapture. In 3v3 I use them (until I can equip them with zooks to ambush tanks with ranger zooks) to capture territory that is not guarded. Usually 66% of the map is guarded and fought over, so big open maps are great for such a cheap squad to capture territory. Also, great smoke ability to defend against MGs and paks.

Combined arms to support an expensive lategame heavy unit vs some T0 units, nice.
And dominate medium tanks... At 12 cp U have enough vs medium tanks, if not, the game would be already over before reaching 12 cp.

You build to it have something vs those vet3 inf blobs running around in lategame, and to support your T3 units.

I agree. While heavy tanks should not be "call in-win" types of units, they should inspire fear.
You have to save fuel and manpower to get them in. You have to sacrifice mediums to get heavies in and that's where you lose. However, if you managed to hold out and not lose a lot during the time you were saving, you should be able to inspire fear into blobs (right now, I only see massive blobs of infantry on every map at rank 16-18). Furthermore, the 12 CP cost is a good change. So.....
....
!! You have to do damage/kill to get CP and you have to save fuel. For the damage and kills you need tanks (but you're saving fuel), and to save fuel you can't spam mediums. See where I'm going with this? Heavies should be stronger vs infantry than they are now. Pershing got effectively nullified. Tiger is weaker but still mainly used to counter veichles since axis have great infantry support vs blobs (and a big amount of great artilery). IS2 is also meh. KT is still strong. The Pershing got the biggest hit mainly because it's the least survivable one of all the heavy call ins.

However, I have also seen a lot of BS plays in the recent games. My teammates letting the enemy control one side of the map (no defenses or anything) with VP and munition points and then cry when the enemy is spamming arty on them (eg. I was in the middle spawn position and my top teammate let the enemy have 2 munition points and VP on Steppes, at rank 18...).

I'm not an expert and I mainly play COH2 to have fun and have good games, win or lose (even though the toxicity is sometimes high), so I'm not really "The Man" on all of this. However, I am a physicist and I believe I am not of below average IQ so I can notice the patterns. The assymetrical balance is great and all, but everything getting "more in line with" is killing the balance.

Even though I agree that Pershing is much weaker than it's supposed to be... that is a big OOF

Pershing is currently the weakest heavy tank, while being expensive AF. Bafore this patch, all tanks were better at AI but Pershing was a beast against it. I played a couple of games with it, lost them all. Combined arms buff didn't help the following scenario:
3 rifleman with double bars, captain with double bars, pershing and jackson behind them vs a massive blob of shrecks and MG42s and infrareds. Shrecks bounced 0 times on Pershing and even a full blast at mid range killed 0 models and damaged two squads among a large blob to 50% hp. Keep in mind that I was the one dug in and he was rushing in.
Heavies should be a lot of CP, lot of resources but great vs everything. That way if you manage to get it, that means you're saving fuel and risking playing vs mediums without any tank destroyers (which also slows down the CP acquirement).
I played a couple of OKW games and when I got KT, I easily pushed through with it mainly because of the massive armour.

The call in heavies need further rework. Haven't played Tiger or Churchill but I can say that Pershing is pretty useless right now and KT, even though it's no longer an infantry wiper, the armour and HP are more than enough to soak up some dmg to help with the pushes.
My points: The nerfs hit some heavies harder than others, even though they were all "in line with"

I am not biased towards anything. I like OKW, I like USF, I'm ok with UKF, I hate Soviets, I'm ok with OST... and I will say this, Axis players complain more about every unit the allies have. Allies usually complain about heavy tanks and tanks in general but Axis players are asking for nerfs to pretty much every single unit USF has.
Let's see major complains:
1) Pack How.: Slow movement, has to be properly positioned, good AOE and damage, behind Captain tech. How to counter? Flank/don't camp/mortar/any light veichle
2) Jackson: High range, fast, accurate tank destroyer. Counter? Maybe use infantry to scout ahead, Panther s**ts on Jackson and can easily dive it if Jackson is out of position (and don't BS with the moving accuracy on Panther, it's good enough for dives with it's HP and armour), pretty much anything that can damage tanks can counter it with it's abmyssal armour.
You people also complain about rifleman, sometimes shermans (LOL), T-34/76s, T-34/85 (which has good hp, low armour and a s**t anti-tank gun, good vs infantry though). I remember seeing somebody write that T-34/85 can easily take on solo Panther and win (Don't know how many people have actually played the game and/or studied anything related to mathematics). It's preety amazing how much BS is being spilled on these forums nowadays.
Stop complaining, start playing.