If we ever build another house, it's going to be attic-free with exposed conduits + hvac ducts / pipes on the ceiling. Every electrical box is going to have a 2" conduit (embedded in the wall) running up to a conduit that runs on the ceiling (if there's a basement, then down to the basement ceiling).

This would let us avoid stapling electrical lines + network cables to studs inside walls. Fixing shorts, adding circuits and upgrading network lines would be trivial.

We'd have to buy what, 1000' of conduit? There's no way that's a sufficient fraction of the cost of a house.