Are actually healthy structural improvements in a society, and make it more fit to achieve any goal it sets its collective mind to. At least in terms of productivity, both economical and intellectual.

I actually think most of the items on your list are not of this kind, but rather expensive concessions to our increasingly forager mindset.

Fundamentally all the evidence I have encountered so far in favour of these being improvements in the sense you have defined (and make no mistake I have been exposed to the arguments nearly my entire life and have indeed sought out to study them and even reconstruct better arguments from their corpses) seems to boil down to looking around the world and see these sorts of things as causing prosperity and other nice things, because they tend to correlate with them. But there is nothing preventing us from saying the same of obesity and other diseases of civilization! What we are doing here is irrationally privileging such a hypothesis, engaging in wishful thinking, because we (now) like democracy or the state having more resources to manage children's lives and don't like obesity or substance abuse, we apply differing standards when thinking about what makes our civilization "more formidable". Don't get me wrong I like many of the other things on your list, but I am highly confident at least a few are liabilities rather than assets.

The scientific method seems to be the only major exception. Not punishing people retroactively sounds to me very much like a good idea, but our society is not one that consistently abstains from this (I suggest you consider recent history), so I can't really say whether societies that stuck to this principle really would work better as theory predicts they should.