One thing I have been thinking would be great, is an rss feed that mirrors the WHATWG Mailing list. Not only would this open up many other ways to view the content (read only), via RSS readers etc. It would also give great opportunity's to import the data to other mediums such as these forums for potential "additional" discussion.
I am currently looking at methods to achieve this. There are some services out there that provide "impermanent" solutions, but I think that could potentially be a problem.