Some things I would do:
- Create extra ceiling boxes for motion, light, temp and humidity sensors.
- Create places for LED-lightning in the ceiling.
- Touchscreens in the wall, no more ugly touchscreens hanging on the wall but tightly tucked away.
- Speakers in the ceiling in each room.
- A room in which all the cables come together so you can tigh it all up there.
- 12V to each ceiling box or other places with sensors.
- Open/close door sensors integrated into the doors. No more ugly in sight stuff.
- Pressure sensors on places where you need to detect a human being entering (beneath the entrance of the house?)
- As mentioned, RJ45 at every socket and to every ceiling box perhaps.
- Curtains when opened hidden behind a small wall.
- A decent place to crawl beneath the floor

- Integrated refrigerator near the couch
Just some thoughts from me
