I'm not sure if this is an apples-to-apples comparison, but VW made a comeback a few years ago when they reintroduced the "bug", but I doubt that made the value of the original "bug" go up. Of course, those cars were a dime a dozen, and the VX is a rare vehicle, but i think the fact remains that this will always be a niche market.

Maybe another 20 years from now, a "pristine" VX might sell for some outrageous price to a collector, but I suspect the market or blue book value will continue to fall or at best level off. If the general population hasn't shown an interest or appreciation for the VX up until now, I don't see how anything, even an Isuzu comeback, could change that.