Well, the computer room would have a double row of grounded three-prong outlets, one every four inches all along the baseboard. The other rooms would be fine with just one every 15 feet or so.
Ceiling fans in every room.
Enough candlepower in each room that if I opt to turn them all on and all the way up, it’s like a laboratory.
Two ranges in the kitchen, one gas one electric. Two ovens. Two refrigerators. Lots of counter space. A pantry with chest freezers and dry storage, including overhead racks on pulleys. Lots of cabinet space.
Cozy comfortable furniture, with the couches and chairs having seats tall enough that my butt isn’t lower than my knees.
One computer in the computer room will be an audiovisual workstation and can playback to projection or conventional flat television, to room audio speakers with controls for which rooms get audio and how much of it, also with recording from microphones in the piano & performance stage room, video cameras, etc.
Yeah, a nice vintage Steinway and a Yamaha CP-80 and a good midsized Chickering in various rooms with the concert grand in a room with eggcarton paneling large enough to rehearse a 100 voice choir with orchestra.
Garage has a walk-under Bear pit bay, a lift, air compressor and a tall box of Snap On tools, front end alignment, hoist, winches, tire mounting setup, etc.
Nice beds. The kind of firm mattresses that when you sit on them, they don’t budge. Soft but like sitting on well padded marble. Hand carved headboards.
Sewing room with a library of spools of thread, skeins of yarn, needles, pattern library, fabric library, lots of good quality scissors.
Reading room with library shelves up to the 20 foot ceiling and hydraulic lifts to get to the top shelves. More comfy sofas, divans, chairs, tables to read at.
Bathroom laundry chutes go straight to the laundry room. Automated return hangers let folded laundry be hauled to their destination rooms at the press of a button. 10000 rpm extractor to spin all the soapy vestiges from the water after wash cycle. Sunlight skylight air dry lines with optionally open windows.
Attic exhaust fan capable of turning over the entire air supply of the house in a matter of minutes.
Central air. Haven’t decided on type of heat yet, still exploring my options.
Blackout bedrooms below the surface with pitch black and additional beds, multiple egress routes for safety.
Huge fireplaces in several rooms. Wood splitter, massive radial arm saw, the usual sledges and wedges attached to a wood supply room with a barn-sized door for the folks delivering the wood to get in.