Thanks HTC for not just saying "The games good enough".
Yarbles' Ford Capri comment made me laugh like a maniac.  You'd have to have been raised in England to understand.
I picked the Ki43, the Beaufighter and the Meteor because I want to see new airframes and historically significant ones.
Here are my thoughts:
Beaufighter - historically significant, mass-produced.  I wouldn't fly it except in FSO, but it needs to be in the game. My #2.
Boomerang - not significant, completely outclassed in anything except an EW environment
D.520 - historically significant - only decent French fighter - used widely in combat by the Vichy French and the Italians.   It was a candidate.
G.55 -  Airframe too similar to the C.205 - Not used in numbers -Not a contender for me
IAR 80 - Historically interesting - only significant Romanian aircraft - but it's Romania - slow, underarmed - not a candidate
J2M - Quite significant - strong armament, new airframe - a contender, but too similar to the N1K1 to add much to the game.  It was a contender.
Ki-43 - The highest scoring Japanese fighter -   Hugely significant - New airframe - will be good for FSO and I'll fly it - My #1.
Ki-44 - Fly a Ki-84 - It's very similar
Ki-100 - Fly a Ki-61 - The experience will be much the same
Me 410 - I'd like to fly this - It was a contender for me -  It just got squeezed out.
Meteor - Hugely significant - 1st British jet - new airframe - The F.3 was my #3
Mig 3 - Terrible plane, only used as a stop-gap by the Russians.  Not a contender.
Yak 3 -  Used in large numbers, great aircraft, but pretty much a lightweight Yak 9.  Not interesting enough for me.