Once upon a time, combatsim ran a poll about, "which sim are you going to buy?", with a list of about titles that weren't yet released.
IIRC, the winner was B-17 II or some such bomber sim at >90% expressed interest, that generated a buzz like nothing I'd ever seen before. "Finally, a WWII bomber sim!!" You couldn't find a doubting word about it in the forums, it was anticipated as "the flight sim to end all flight sims" - the Beethoven's symphony number 9, after which no new product could hope to compete. After release (just before which, some 90% of the anticipated features were snipped), I never saw a good word written about it again.
The losing sim on the poll, by a huge margin, scored only around 2% (compared to about 15% for the next-least-anticipated sim on the list). I felt sorry for it, and the poor developer who was spending so much time, effort, money and personal sacrifice, to develop a sim that nobody wanted to buy.
That was Il-2.
-SK