FSCS became the FCS when the U.S. decided to go with United Defense/Boeing instead of Alvis-Vickers/General Dynamics as the prime for MGV. The UK stuck to their guns and renamed the FSCS/TRACER to something more familiar to recent news watchers: FRES-SV. This became Scout-SV, and eventually, the GD Ajax. FRES-UV is the Vickers Defense Boxer and seems, after two pull outs in 2003 and 2007, finally poised to be adopted by its designers.
A couple years later, BAE bought United Defense, and brought Vickers and GD with them too. They're not technically related but it's not like the people who worked on SIKA's Tracer in 2001 were left out in the cold. SIKA itself was a conglomerate composed of Lockheed and BAE with GD/Vickers as subcons. Three of these worked on MGV and Lockheed was the secondary prime for the XM1219 ARV and MULE UGV.
The result would have been exactly the same: four to six prototype vehicles abandoned in a lot, except it would have been the Ajax instead of the MGV NLOS-C, and maybe the vibration issues would have stopped production early instead of the weird concurrency thing the UK did. In any case, it was a doomed program because the objectives were silly. If it had been demanded to fit two, three, or four in a C-17 instead of one in a C-130, it would have been fine. Alternatively, the baseline could have been a C-390 or an An-70 or an A-400M.
Regardless the telecommunications and computer technology wasn't quite mature enough in the 1990s to do what the U.S. Army wanted, which was a combination of Starlink and Android today, and FCS doesn't make much sense in the modern era given armored vehicles' unique vulnerabilities to certain modern weapons which were at the time unforeseen. Given that without their fancy high bandwidth SATCOMs and extensive intercommunications, they were little more than glorified CV90 Mk IIIs, you'd be much better off just giving all that stuff to a Bradley with a small turbine or new diesel engine instead.
Ground Combat Vehicle would have been a much better platform given its extensive passive protection measures honestly.
