My brother in law just built a house and TBH it's all a bit ghey.
By all means wire the place right and future proof it a bit re. HDMI, USB, Cat6, built in speakers, lots of spare conduit etc etc but Nest is a gimmick imho and TBh I regard a lot of these overly digital services to just be a hackers dream.
One caveat is i generally get annoyed with non-analog inputs, I just find them slow and needlessly complicated as there's not enough buttons and too much is automated whereas i prefer to to manually adjust. So yeah, i absolutely loathe using apple anything for example. So i may not be the best person to ask
Who are you using for the GC part? We are considering a mild reno, kitchen, bathroom, basement and closest basically but need a GC.