hmmm interesting you noticed those, but I haven't played SFA in a while.
As for F-16A in USAF lingerie livery I think we here at CA wondered about lack of one since DLC launched 2 years ago, if TK planned one he'd made it as one of the first DLCs
quite suprising they made new models of some variants as you say, I thought that was idea Thirdwire put on hold (tweaked models for DLC variants)
...or maybe TK decided to go deeper into the mobile version and considers it worth making new models for some extra variants (OR just to show the core PC crowd finger?)
BUT without even rudimentary cockpit view and any A2G, limited time missions, it's still missing few things Air Navy Fighters/F-18 Carrier Landing titles have
still, not a single word about Exp3