CoH1 made a great german campaign. For me it was a huge suprise that CoH2 didn't have german campaign especially that they intensionally remove battle of Kursk from soviet campaign. Then Western Front DLC and Arden push. It was a huge german offensive which did great progres in first days - yet they focus only on USF.
Entire USF Arden Assault campaign seems very wierd as in first mission you have german pushing your frontline and then suddenly you are the one in offensive.
I think Relic will learn that axis campaign is what a lot of people asking for. Question is if it's gonna be in release (which i doubt as allies campaign seems pretty big).
I just hope this german campaign will be as story line similar to old coh1 campaigns. Smaller number of missions but well thought and design is way better.
CoH2 felt like a product of corporate meddling after SEGA took over for some reason with as you said a poorly executed Soviet campaign and non-existent German one even tho there was a big opportunity for one showing Operation Barbarossa or the Ardennes as you said.
CoH3 seems to have a more balanced and community involved approach, at least so far that isn't until the game is actually released.
I doubt there won't be any long lists of DLC shenanigans going on again sadly but I guess thats just modern gaming nowadays altho I would say many people are against the practice and I myself know people that said they'd never play CoH2 because of the amount of DLCs and P2W mechanics that were in the early days of the game with 5 dollar premium commanders that were better than anything else in the game at that time and were then nerfed after a month to make room for the next batch of OP commanders so they will most likely miss out on a lot of potential customers again if they decide to milk the game once more.
And I honestly prefer the dynamic approach since it's non-linear meaning that you have far more options and freedom to make your own experience and not to mention replayability, like the Total War games.
Altho I would still enjoy a good story and new cutscenes.