Hi
I am at the ICANN DNS Symposium in Colombia
https://icann.org/ids where I will give a very brief presentation on the PSL.
Doing this in the context of PSL being a light-lift means for developers to show more elegance interacting with domains and conversely as the least awful resource allowing domain administrators to articulate their preferences about how their namespace is configured.
The agenda and zoom links should be on the url above.
-Jothan