The BK90 is actually very simple to use. You can just move the target waypoint onto the targets using radar. It also uses a radar altimeter so QFE is irrelevant. Furthermore, it's a post cold war weapon.
For viggen, keep the RB05 and RB04. If you want to allow mavericks on some missions, only allow the RB75. The RB75T carries a bigger warhead and the RB75B is a fictional variant with increased zoom and resolution only there to help VR players.
For the A-10, only allow the AGM-65H. This is the worst-performing maverick available.
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