The name I see most often associated with the VX is Nakamura.
.
I read in a few places he was the VX 'project manager' - or something to that effect. Murayama could have been a member of the team under him. ???
.
I also believed - maybe erroneously - that Simon Cox played a greater role in the exterior styling of the VX. I believe he did receive some credit for his role ....... again, maybe erroneously. He now appears to have a great role in the exterior styling of the new Cadillac vehicles.
.
I do see an influence - if not a resemblance - between the VX and Murano.
.
I also see the 'future VX' look ...... VX-2 or whatever ? ..... in the new Cadillac SUV .... SRV ? The pic of the VX-2 - Anita's 'weekend car' - has a look very similar to the new Caddy SUV. And a quick look at the Axiom and new Caddy SUV will (should) reveal a resemblance.
.