Well, I, for one, would like to see some AGM-137A TSSAM missiles as stores. I can advise on how to tweak the available drawing to show the "carry" configuration as opposed to the "flying" configuration of the 3-view. I also can advise on what and where to modify for an extended range version that was studied for a proposal to the RAF.
A second item I'd love to see was the Northrop-Ventura ND-1 proposal for an integral rocket-ramjet powered submunitions dispenser that could be conformally carried on even a F-3E/F-20 class aircraft.
One item that would, IMHO, be interesting would be an AIM-54X Phoenix-ER missile in which the solid rocket motor is replaced by an integral rocket-ramjet motor with four intakes at the leading edges of the fins, somewhat in the Russian style used on the Kh-31. Alternatively, a different Phoenix ER with a booster stage added. Or, combine the two for a Phoenix-XLR with both the booster stage and the integral rocket-ramjet motor.
For people who want a different-looking AAM, an AIM-162 air-launched version of the main stage of the RIM-162 ESSM.
Going back a ways, how about a 1/48 AAM-N-10 Eagle
Final thought would be operational variants of the Vought ALVRJ test vehicle, either for ASM or AAM purposes.