I haven’t read the thread yet. I wanted to post first and see how many of my ideas are already mentioned.
Here’s my dreamhouse features:
Big master bedroom (it need not be huge, just big.) Large closet in it for me, very large walk in closet off the master bath for her.
Master bathroom with stand up shower in corner, double vanities, big jacuzzi for two, and a linen closet. Seperate little room for toilet because of the dreaded aerosol effect!
Bonus points if shower has multiple showerheads at various levels like you can find in Home Expo.
Washer dryer closet upstairs near the bedrooms. Two other normal size bedrooms with normal size closets are fine for the upstairs, with a shared regular bath.
Downstairs is open concept. No little boxy rooms tucked away where you won’t use them. The dining room table should be out in the open between the kitchen and the living room area so the space is always enjoyed and used. I’m paying taxes on it and paying to heat it. I don’t want any rooms that I only enter once a week, or even once a day.
I like putting a guest bedroom on the first floor. It’s more useful than a study or a den, yet can be used either way.
In a perfect world, I’d have no carpets anywhere in the house. All hardwood and tile. Area rugs in some spots, but that’s it. I’d never actually do this, though, because doing something that unusual would be hard for resale.
That’s all I can think of for now. Hopefully reading the thread I’ll get more ideas to leverage.