Dave, you make a good point :-)
On my previous cruise on the Navigator last November, I completely forgot about priority check-in and waited in line for over two hours! When I got up to the front, they looked at my set sail pass and said "Oh, Sir, you could have skipped the line!" With my wife and children looking at me the way they were, I don't know if I have ever felt so stupid before in my entire life. I was under a lot of pressure at the time and was extremely tired. Oh well, lesson learned.
I think that perhaps the reason that they don't offer too much more for Pinnacle is that after you have already taken that many cruises on Royal Caribbean...they probably already have you!
I am almost to the point where I am counting the hours now!