re: Building New House -- What additional amenities should I consider?

Ok, I've done this a few times & made a lot of mistakes. So here goes knowing I will forget a lot. Be forewarned about a project like this, really easy to blow a budget once you get started.
Kitchen - gas cooking appliances - we did two under counter ovens once (great for T-Day feast) & dual microwaves - stand alone ice maker - Jenn-Air frig (did a separate freezer in utility once with frig only in kit) - if room, wine cooler - large, deep sink with pot filler.
Mechanicals - tankless hot water heaters - research radiant heat, so such healthier & efficient than forced air - no copper plumbing - NATURAL GAS GENERATOR WITH TRANSFER SWITCH - foam insulation
Lifestyle - outdoor gas & electric outlets (plan ahead for the outdoor kitchen & crawfish) - easy access to bathroom from outdoors - once did a double garage door on the back of the garage; pavestoned the adjacent patio & garage floor & if rain hit a boil, just open the door & the party continued
A/V/Tech, besides the obvious already mentioned, easy access to rear of components. In a prior life, gear on shelves and cabinets with hall behind - did a camouflaged panel I could remove and easily wire or change as equipment changed - wired security - plan ahead for your programing source, cable, sat, Internet
I could go on for awhile, but think the best thing I can offer, is you & the SO give thought to YOUR family & lifestyle. What would make this house YOUR home?
Use your imagination (when my kids were younger, had a wall switch in the master that would kill the kids TVs upstairs, "bedtime guys") & plan ahead, i.e., PVC under driveway.
I offer an opinion freely & rarely offer advice, but pick your battles with the SO, be prepared to compromise choosing the things that are truly most important to you. Building can be a rewarding, bonding, fun experience or an f'n nightmare.
Good luck!
Apologies in advance for spelling & punctuation OT, on the mobile.