This is just my take on it: Celebration IS essentially what you’re talking about. I’m not sure how people building their own houses would make it any more “Disney”? But if you mean a different section of property or something… I would hope that before Disney offered land/housing to any of us, they would offer it to their CMs first.
Frankly if I could miraculously afford to buy Disney property and build a house on it, I would use the money to build affordable housing for CMs. I don’t think I’d want to live on property unless I was actually working there. It would lose something if it was the place I left/came home to every day while working elsewhere and leading my “normal life”.
And I don’t think Disney looks out for their CMs enough in the housing area, so anyway, that’s my initial thought. I’d much rather utilize an opportunity like that to their benefit.