Apologies, I seem to have worked through your OP in reverse order, because thats how I thought about your points, do bear with me.
I cant blame them but , but they should listen to who plays the game a lot of hours and not the so called pro's .
It depends on the kind of players you're looking at.
If you're the kind of player that sits defensively, then of course you're going to have a lot of manpower.
If, however, you're the kind of player that tries to attack strategically/carefully or tactially (which a lot of pros do) then you're going to actually run out of MP in the game.
Most of the pros are there because they know the game, they know when to attack, know the enemy's army and know the counters to certain strategies.
Oh and its the pros who put the most hours behind this game, you know, the people who's mission it is to improve, utilise every resource they have and theorycraft, not to mention stay in practice. It took me a long time to get good at CoH1, the more I found I watched the pros, the more I learned how to utilize my troops better and focus on many things at a time. Then I practiced by throwing time at it.
But trying to do that with one game is wrong , to kill more efficiently you have to play fps games as well and / or rpg shooters and know the killing equipment ( weapons , etc ) , and most dont know squat about the diferences between the military equipment they have acess in the games ( example : mgs , ats , tanks , etc )
IMO, its not a problem. In fact, this game has historical basis and if anything, it should encourage people to learn about the history. Thats one reason why they make WW2 games like CoH2 - to encourage people to learn the history behind the game instead of making new units like DOW2.
In coh2 you have to kill a whole lot of the enemy to win , thats the main problem , if we didnt have too much manpower the game would be better
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CoH2, along with CoH1 is not about killing enemies. If you get a German MG team with 500 kills next to your base, or turtle around your base, racking up kills, then great! You have lots of vet 3/5 units but it isn't going to win the game for you.
CoH2 and CoH1 is all about map control. Nothing more nothing less. Killing and effectiveness of killing units comes in handy when you're contesting regions, but these are just tools for map control at the end of the day.
This is really highlighted in the VP version (the competitive version of the game) where you must contest the centre, no turtling, just fight for the centre.