Russia - threadbanned users in OP

Honestly, I don't see the mentioned issues with the F-16 as problematic. While yes, the MiG-29, the current mainstay fighter in the Ukrainian inventory, can shut off her front air intakes and open intakes on top of the fuselage to take off from gravel strips, other aircraft in the Ukrainian inventory don't have this feature, and are equally as vulnerable to debris on the runway as the F-16. This by extension means that runways and taxiways need to be cleared of debris regardless of aircraft type.

As for the landing gear, yes, the F/A-18 is a carrier fighter, which means its landing gear is designed to handle extremely hard landings. However, the F-16 isn't exactly a prima donna either. This aircraft has operated of highways and auxiliary airfields as well, and is operated in some pretty tough environments even today. From what I can see, a lot of these supposed issues about the sensitivity are overblown. The F-16 will require about as much care and airfield preparation when operating as the Su-27, which is already in Ukraine's inventory.

The one thing that is a concern, as you correctly mentioned, is the vulnerability to air attacks while the jets are on the ground, as they will definitely be a priority target. However, I do believe that this can be mitigated by basing the aircraft west of Kyiv, thus putting Ukraine's biggest concentration of surface to air missiles in the path of any potential large scale missile attacks. It is also worth noting that between their pre-war inventory, Patriot, IRIS-T SLM, SAMP/T, Hawk, Avenger, NASAMS and the ability to launch Sea Sparrow missiles from their Buk launchers, Ukraine actually has more surface to air missile systems available than they did at the start of the war, while having to cover a somewhat smaller area. Also, once more, the access to NATO recon assets comes into play, because you better believe that Ukraine will hear about any bomber or missile launch as soon as NATO recon or ELINT/SIGINT assets detect it.

Probably also for slotting into Ukraine's existing Buk SAM systems. AMRAAMs are a development of the AIM-7 Sparrow/Sea Sparrow missile family and use the same general interface port, so it should be possible to modify Buk to launch the AIM-120 as well. Ukraine has been using Sea Sparrows from their Buks, so there's some in-country experience in that regard.