We added install only for fans ($94 each) to each bedroom and have bought our own fans for the sparkies to install. They need to put nogging in the ceiling and run cables so it is easier to do this as part of the build.
External power points in the alfresco and around the side of house. This later one was added for exterior 12 volt garden lights.
We have added a switch in the meals area and junction box on the outside wall. This will be used to run an underground cable out to the pavilion (gazebo) in the pool area. It will mean that we can add lights to the pavilion lights on from inside the house.
I also had speaker wire (5 pairs) placed in the ceiling (up and down) which I will install ceiling speakers after handover that will run back to under the stairs. Here I will have a 6 zone amplifier and a media streaming device that connects to the network and you can stream music from mobile to the ceiling speakers. Each zone will have a wall plate that controls the input, volume , bass and treble. All zones can play the same music or each zone can play a different input (amp allows up to 6 inputs).
I still expect I have missed something.
Oh wow! That is wonderfully detailed and will be so useful at elecrtical, I'd only thought of Nbn upstairs and down, but your plan blows all that out of the water. So many good ideas especially for the multiple tv streaming and in out case Gamers!
Only thing I had even remotely close was extra powerpoints etc outside for xmas lights. That junction box for pool area later is going to save us a lot of headaches down the line! Thank you!!