Seriously, some thoughts:
- Central vac with floorboard auto dustpans where appropriate
- Nice shower with at least two heads
- Higher end, large gas range in the kitchen, good vent hood
- Large farmhouse sink
- Kitchen eating area/breakfast nook
- Slide out spice drawer/cabinets
- Instant hot water
- Spacious master closet(s) with custom organization
- Whole home audio
- Garage organizer/storage,
- Big mother TV. Like real big. With nice in-wall sound.
- I need a man-space. Music equipment, games (pool, darts, foosball, shuffleboard, etc depending on your tastes)
- Workout space, depending on your needs
Obviously, hard to address outdoor ideas without knowing the property. I do love a hot tub.