Many thanks for passing along these resources! Krier is a giant, it has been some time since I've engaged with his thinking, but I've very much enjoyed watching this provocative presentation. And it links up quite well with J.A. Arnfinsen's conversation with Nikos Salingaros at levevei.no.
In particular, I found it interesting to come into some of these lines of thinking after having wrapped up the past month of working on this exhibition in San Diego: http://uag.ucsd.edu/. Good to pull into these topics now that the dust has settled a bit.
All the best,