Yeah, I'd settle for a high quality search within reader itself, realizing that integration into the main search might be impossible.
I find it really confusing that the "Share" link in Reader still goes to Buzz, which is sort of associated with my G+ profile but not quite, in that it doesn't seem that people who are in my circles are necessarily able to see them.
I'm also waiting for post to G+ from reader.
Read Later would also be very useful.