Also, please add rejected per hour and efficiency.
Another user has a nearly-ready patch that adds a lot of this information.
I misread you the first time -- the rejected-per-hour stats are there, but efficiency is not. How do you define efficiency, and how would you compute it?
Based on context, I think he's referring to a % good/stale shares stat. So (#good shares) / (#good + #stale shares). Any better efficiency metric would require you to load the current difficulty...