Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
I think its to reduce radar signature, the F-35 is the same.
@0000rick0000
That was precisely the one I purchased... it is very well done externally, but needed a massive polygon reduction to be practically usable in our simulations. Also textures are way too high in resolution, and some need to be redone and many details are untextured....and then the interiors are very basic and imprecise. So it requires some more work than I thought to look decent in the sim, but looks promising after the first tests. On the good side there are already several cockpit videos so modeling the interiors is definitely doable and does not seem particularly difficuly. The big unknown at the moment is still the MFD: some pages of the MFDs are well shown in the (short) cockpit interface video released by Boeing some weeks ago... but some important information are still missing.
Anyway, given my love for jet trainers it seems a good "long term" project to do in small bits...
As for the TA-4J I am doing, I am trying to build it from the beginning with potential compatibility with other simulators in mind ;-)
It's definitely a love child. I was thinking Alpha Jet and Hornet.