I dont see that ever being the case, honestly. Pre 80's cars being made of all metal is where the cool factor comes from. Once cars like our beloved foxes started having plastic bumpers and super cheap interiors, the collect ability just isnt the same IMO. Sure, we fox nuts like them and seek out nice ones, but I dont ever see them getting to the concourse restoration category.
Oh I agree with you on that. I don't see these cars drastically going up in price, just speculating on what I think it would take to for that to happen. I'm by no means an expert, but my opinion is that clean "survivor" types will hover around the same price point we are seeing now + inflation.