Wired Networking: Wireless can never touch the bandwidth, latency, or collision handling of wired networking. Provide wired access for all stationary devices, and use wireless only for those devices that are mobile or wireless-only by design (laptops, tablets, phones, WiFi lightbulbs, etc.). As much as possible, avoid wireless for things like smart TVs, set-top boxes, game consoles, etc. The more devices you have on wireless, they less bandwidth is going to be available to any one device. Unless you're going to invest in some pretty expensive networking gear, I'd stick with Cat 5e or Cat 6 cabling for now (Cat 7 is budget isn't an issue), however, ensure you use some form of wiring duct behind the walls: should the day come when you can reasonably wire everything with fibre, it will be a whole lot easier to pull it through wiring duct than it is to remove all your walls.
Geothermal Heating/Cooling: Again, if you're not constrained by budget, invest in a Geothermal system for your heating and cooling. This often needs to be done rather early in the house design/build phase (due to the need to dig deep holes into the ground), but once in place you'll have nearly free heat in the winter and cooling in the summer (usually you just need to pay for enough electricity to run a heat pump and a fan, which is negligible). I'm fortunate enough to live in a home with community geothermal, and the system has been flawless for us (albeit not as cheap as a DIY system, as the community treats the turmoil energy as a utility. Still cheaper than the alternatives, however).
Solar: Even if you don't plan on installing a solar system (ha!) right away, I suppose you could at least get the basic wiring done, such that when it is time to install such a system you already have a suitable location for the banks of batteries (if you're building from scratch, this could be part of a custom utility room designed for this purpose), plus the necessary wiring between that location and your rooftop panels. That way you're future-proofed, and the rest would pretty much be plug-and-play.