I don't really object to either A7 or G11, but the idea that these bits of jargon justify a deletion is a problem. Especially since when new criteria are added, A7 may become A8, leaving anyone looking at the deletion log in future very confused. Most people wanting to know why something was deleted will have no idea what these codes mean and it gives a bad impression that you need to understand this sort of thing to get involved with the project.
Blocking people for having usernames in non-Latin characters is the worst policy I've seen on Wikipedia. It's going to become even worse when we have single login and people from the wikis that use other alphabets find they need to log out before editing or risk a permanent block of their username.
Other policies are sometimes fine, but their application is inconsistent which gives an appearance to unfairness, so perhaps the application of these ought to be looked at - not just the policies themselves.
Angela.