Turn on Comments (or similar) for each site

I really like the Aegir hosting system, especially Omega8.cc's implementation. Something that I think is really missing though is a per site administrative notes system. Basically if comments were turned on for the Site node then admins could use this to keep track of any migration notes, client notes, or whatever. This would be extremely helpful for someone like me who manages several sites on several instances.

I had a brief back and forth with Greg from Omega8 and it seems that this is also a request for the Hosting module as well. https://drupal.org/node/1299526 From what I can tell this would require either a custom module or a small update to an existing module.