I tend to prefer the strategic over the sim.
Then you are like me. I'm more of a War Gamer than a Flight Simmer.
I bought BoB1 in 2000 as it claimed to be a Combat Flight Sim and a War Game.
Had to see if this was true, and was not disappointed with this unlikely marriage. BoB1 was buggy and un-polished.
BoBII v2.11 is a vast improvement over the original BoB1 in the Flight Sim Department. The Campaign (War Game) part of it has been changed
very little since BoB1, nevertheless, as a war gamer I think it is a pretty good Battle of Britain war game.
Last July we finally recruited a talented man to tackle the Campaign code.
Others have tried before, but saw the code and cried "Oh my God!" quit and ran away. I think this is what is called "Seeing The Elephant."
Anyway, two27, our intrepid Campaign coder has been working to improve the Campaign in a big way, with a critical eye on history, a professional understanding of the military, and a hatred of code bugs.
Much has he accomplished, to our great pleasure, and for v2.12 we will have a much better Campaign than before.
v2.12 not quite ready. The rest of us BDG guys have other non-code work that better reflects true terrain and history, and yet unfinished.
Is BoBII v2.11 the best war game for the Battle of Britain? I don't know, as I have never played any others.
That said, it is good enough to have kept my loyalty and full spare time for 10 years to it.
Other folk may answer your other questions better than I.