What I know that WarBirds are planning to enter Jet are with Korean war
They allready have F-86 - need MiG - 15
and HTC!!!!! If WB do it I return to WB

and I think a lot of players will do the same.
As for me the best would like following:
60-70s
Mirage III, Vouture, Super Myster B2, A-4 Skyhawk, F-104, F-4E Phantom, MiG-17, MiG-21, Su-7, and some others from that period of 60s, 70s,
andfor 50s:
Myster, Meteor, MiG-15, Vampire, F-86 and some more.