What I didn't like about the airplanes in WWIIOL were:
-- no icons until you were very close. That made it way too hard to see planes.
-- no ability to move head position (so most rear views were hopeless).
-- no ability to start in any allied fighter other than a hurricane or similarly very slow planes.
All of this meant, take up Hurricane, endure endless passes from 6 o'clock from 109's you couldn't see until they were in firing range.
And there weren't many pilots flying in it.
All of those things together made it suck.
What I liked: feel of takeoffs and landing (bounding along the ground), and the look of the airfields (many that were all grass).
Aces High was and is infinitely better for air combat.