> Safe and easy to use separated continuous paths. Not just paint strips but actual physical separation.

I think this is such a critical point. A lot of people are not interested in getting on a busy road, but would definitely get on a bike only path.

I will also add that I think cities should be creative and try to develop more bike infrastructure that is independent of the roadways altogether. The lakefront trail in Chicago is a good example. Many cities could develop similar infrastructure along rivers, through parks, through repurposed streets, etc. having a separate network is not only safer but if done right can often be faster for commuters than driving or public transport.