Nic Quijano, who BTW has started his own FlightGear-related blog, has added selectable armament loads to the F-4N, so you now have a choice between the original air defense load with three drop tanks and a new CAS (Close Air Support) load with six Mk 82 bombs. The original load is invoked by running the original "F-4N-set.xml" model, while the new one is invoked by running "F-4N-CAS-set.xml". This brings the F-4N version number up to 3.1.
Nic also tied the fuel gauge to the total fuel. I'm still torn on what I want to do hangar-wide concerning this. Probably best to convert all the models over, then when the next FlightGear version is released I can switch some of the fuel gauges back to tank if I want.
Thanks for the nice work Nic!