In my humble opinion...there has never been a more misunderstood statement than that particular one. You know..."someplace where parents and children can have fun together".
My interpretation is that the park, in general, is a place where parents and children can have a good time together. Not everyone (adult) wants to ride on things that were designed for children, but most, not all, of the attractions that adults can go on are designed for both.
Didn't Walt install a carousel in
Disneyland? Wasn't that what he was referring to when he was talking about it. "I'd sit there on a bench, eating peanuts, watching them ride the merry go round." What was one of the first things in Disneyland?...a carousel!
The difference in Disneyland was that after the kids would ride the carousel, they could now go to an attraction that both would be able to enjoy. Not just a whole day on kiddie rides. I do not believe that he ever intended that they stay joined at the hip for the entire experience.
So in response to "what would Walt think"...I think he would be absolutely OK with it and not for the extremely negative reason that he was a profit monger. A lot of disrespect there for a supposed Disney fan on a Disney board. Without Walt Disney everyone would be at a beach someplace getting sand in their underwear. None of us would have experienced the magic that is the Disney park experience.