Not sure I agree tbh. They could repurpose a ton of animations from Final Showdown and still be ahead of the fighting game curve in most cases. The engine used for Yakuza may be flexible enough to use for a Virtua Fighter game, and graphically would be at least up to par with most current fighter standards. And Virtua Fighter has historically only added two fighters per iteration, so there wouldn't be many to design from scratch.
As
MikeProtagonist suggested, I think an early gen release would make sense, as it would give the IP breathing room from others that have been released recently, whilst also allowing it to maintain its tradition of being graphically more advanced than its competition at launch. They've been systematically addressing IP that placed high in their survey of brands customers would like to see more of, with only Jet Set Radio, Virtua Fighter and Skies of Arcadia yet to have something announce out of their top 10 results.