I think you covered everything that google doesn't need to index. Did you manage to follow a list of things to do? Or just from the top of the head? Because it would be a great tutorial if you have it written.
Haha - thanks for pointing that out. That's a pretty nice addition... I just did the 3.5 upgrade last week - it really is a fantastic bit of kit.
Stuff that shouldn't be spiderable (like new reply links, search results, etc.) Search the source of a page for "nofollow".