I think no "gps" is a good idea. But I flown one of you mission and on the briefing it state the target as waypoint. The problem is that we don't have a way to know that on a F5 or the 21's and it make striking mission difficult. Perhaps giving grid coordinate or a bearing and distance for a nav aid will help.
I am not a fan of the random failure however IMHO, it's a pain and do not reflect reality, take pitot tube freezing for example. If random failure is set, It sometime freeze randomly with cold temperature without being in cloud formation. The list of problem like that is exhaustive
o7