Google Reader for managing mailing lists

I used to use bloglines. A lot. But now I've converted over to Google Reader. It's good. It's fast, I really like the way it tracks what I've read. Yes, yes, search would be good. Yes, I know it's being worked on.

But one thing that I haven't seen or heard of in the pipeline is mailing list reading.

I like the reader interface for reading mailing lists. I want to be able to subscribe to a list with a login+listname@reader.google.com. There are some lists that are more-or-less read-only. If I really wanted to post to them, I'd go to my gmail account and write it. Or perhaps Reader would have a reply-to feature that could pop up a compose window.

Alternatively, if google mail could generate RSS feeds based on specific tags (at least one tag, but multi-tag would be better), then I could subscribe to that in Reader, and we wouldn't have to change anything in Reader.