Has no one noticed that Jacob didn't build any anti-tank weapons at all? You can build them like artillery, but he had none for his entire army. I don't know if Johan did the same thing or not, but it just seems strange to me. I suppose he relied on his tanks and close air support for tank destroying, but it could leave his infantry units wide open to an armored attack.
Another thing I noticed in the game is that production seems a little low for some things, and others fine for the time but later in the war the numbers were way too low.
Submarines - Jacob had 20 naval factories towards building subs - which got him after years of doing this - 7 subs a year. Which is way too low. Even if you multiply that by 20, you still couldn't come close to the numbers of Submarines Germany historically constructed, which was 1152 subs during war time.
Aircraft - Jacob assigned around 40 factories towards his bf-109 fighters. A group with maxed out efficiency of 20 factories were only building 4 and change per day. Rounded up that is around 1500 fighters per year. OK, two sets of 20 factories - still 3K a year. This when Germany produced over 57K fighters during the war . . . Not to mention that they had 133K+ in total aircraft production 1939-1945. It's OK for pre-war up to and including 1940, but afterwards when production increased greatly, Germany just wouldn't be able to get anywhere near historical numbers. Even with double the factories Jacob had, and double the efficiency, it would still come up way short if comparing to 1944 peak production.
https://en.wikipedia.org/wiki/Military_production_during_World_War_II#Air_forces
And yes, speed two was way too fast. I think that should be speed three, and speed two should be speed one. Speed one, should be really slow.
Anyhow, I like a lot of what I am seeing in the video, but like many have brought up, I think a slow single player along with an in-depth explanation for everything would be much better than a fast pace "holy crap my units are attacking and I don't even know why" multiplayer game.