Perhaps I can help a little here...
The problem seems to be made up of a number of parts - which is the normal position. In my view, they are:
1. The nature of the force being applied to the aircraft on launch, which is a function of the catapult power setting and the release characteristic of the hold back bar
2. The response of the NLG strut to that force
3. The response of the airframe structure and seat between the NLG strut and the pilot
4. The influence of the cockpit design and the pilot's equipment, especially the seat restraints, helmet mass and the pilots position on launch.
Reading the article, it looks as if the USN/LM team are going for part 1 above, by adjusting the power setting of the catapult so as to reduce the NLG response. If that fails, it's on to 2 (likely), 3 (less likely) and 4 (possible). Damn difficult stuff, this cat and trap aviation.
Best regards as ever to all those good people working the naval aviation issues,
Engines