I have written up what I will say to python-committers once the migration is complete: https://paper.dropbox.com/doc/CPython-workflow-changes-mx1k8G6M0rg5JLy80F1r6 . Feel free to leave comments if you think there is something I missed (which can include thanking you; this has taken so long I'm sure I have forgotten someone who has done work towards making this happen).