But I've put a lot of thought into this, myself. On the other hand, I've got an appointment in a few minutes, so this is going to be somewhat disjointed.
Environmentally friendly heating and cooling. This will depend on your location, to some extent, but includes Geothermal for heating and hot water, subterranean air conditioning, solar water heat, evaporative cooling, self-tinting windows, and adaptive exterior walls to adjust for light and temperature conditions. Also an insulated thermal mass that can be used to store waste heat in the day and be extracted at night.
An asymmetric roof, tilted towards the south (in the norther hemisphere). Lots of solar panels; connected to the aforementioned thermal mass to capture excess heat. If you live in an appropriate part of the world, add non-directional wind turbines on the northern edge of the roof. Under the solar panels, copper or stainless steel roofing tiles.
Gutters designed to feed into an underground storage pool for grey water. Use the (cleaned) grey water for your heat exchange.
Doors and interior walls designed so sections of the house can be made environmentally independent, with environmental controls that are at least that specific. Interior ductwork for HVAC. All wiring done via conduit with regularly placed, pre-placed pull strings. Every room on its own electric circuit (if not more frequently). Extra-deep outlet boxes, so adding future tech will be easier. Outlets every 6-8 feet. USB power outlets in every room.
Wallboard and paint that doesn't significantly interfere with radio frequencies. (Fuck you, Horsehair plaster).
Doors and passageways that all meet ADA standards. At least 2 entrances to the ground floor that do not have stairs or significant thresholds. Extra closets placed on every floor such that they could be converted into an elevator should there be need. (that is, one on top of another).
All plumbing done at least 8" from an exterior wall and inside an insulated, interior wall or bulkhead (fuck you, burst pipes).
Mixed height work surfaces in the kitchen. Main-floor or bedroom-floor washer and drier. Open floorplans. Exterior door in/very near the kitchen. Composter near the kitchen's exterior door. a yard that is wheelchair/stroller accessible. Raised growing beds near the kitchen for vegetables.
There's certainly more, but I got to run to the doctors.