We have had the exact same discussion on the HoI forum. Imo Paradox has made a great compromise in HoI3. Of course, the most stubborn historians probably left, and the most stupid casuals never even found out how to play the game, not even in Arcade mode, but the rest of us had a good time.
Imo, left to itself, the game should roughly follow history, as far as possible. But if I play, say, Ulm, I really don't want to be an OPM for the rest of the game, just because history says so.
What I am more concerned about is the big changes in gameplay, that come with each patch. I don't care who is responsible for those changes, historians or casuals, but I get angry, when the game I bought and liked suddenly changes to something completely different that I don't like. I like microing, so I don't like Colonial Nations. I like challenges, so I don't mind Coalitions. I always thought vassal feeding was an exploit, so I never used it much - now I hear that it cannot be done at all, which to me is overreacting.
In the old days, I could always go back to an older patch, if I didn't like the new stuff. I could even have two different versions of the game on my HD if I couldn't decide. But after Steam, there is no easy way to go back, if I accidentally update to some new mechanic I don't want.
Paradox is aware of this, so they have provided an easy way to play 1.3.2 - but will this option be available forever?