Quarto
Unknown Enemy
Bearcats - yes, the ones in BW service are what was captured in WC4. Whether the factory in BW space still exists or was shut down is an unknown. In response to BattleDog - you are assuming that the Tigershark entered service in 2681. If anything, its designation indicates that it entered service shortly after the Bearcat did... although, IIRC, there are no official sources confirming the Bearcat as the F-104, or the Dragon as the F-107. Indeed, I think a fairly convincing case could be made for the Bearcat to have a designation lower than F-103. It is quite conceivable that the production of the Bearcat would have been delayed in the rush to get the more critical Excalibur out the door.
Ijuin, while the Epee has a high probability of appearing (and the Scim will appear - it just won't make it to the end of the game), I rather doubt the Banshee will. Neither the Avenger nor the Longbows will appear (and if Longbows did appear, they definitely wouldn't be carrying Vipers).
As for designations, I believe they are quite a good indicator of chronology, but within limits - in real life, designations are assigned at prototype stage. Getting a fighter from prototype to service can take a while though, and it's possible that a later prototype, with a higher designation, will get into service first for some reason.
Ijuin, while the Epee has a high probability of appearing (and the Scim will appear - it just won't make it to the end of the game), I rather doubt the Banshee will. Neither the Avenger nor the Longbows will appear (and if Longbows did appear, they definitely wouldn't be carrying Vipers).
As for designations, I believe they are quite a good indicator of chronology, but within limits - in real life, designations are assigned at prototype stage. Getting a fighter from prototype to service can take a while though, and it's possible that a later prototype, with a higher designation, will get into service first for some reason.