I don't really see that there's a problem with incivility on HN.

Of your suggestions I only take issue with the first; if I had to post with my full name I'd leave. I've already got Facebook/Twitter/blogging if I want to publish something on the web with my real name.

I'm also not sure how easy it would be to enforce.

On a side note I usually really enjoy your blog. So, you know, thanks in general.