The mechanical systems of todays modern 2x houses are much easier to install in those 2x's than the timberframes. But I don't consider that a flaw because it makes the people involved stop and say "this is not like usual, how can we do this". that is good.

so instead, the flaw for modern mass production housing is, the tradespeople don't think. that is bad. repetition is only good for practicing free throws and making something the same.