I'm going to make a bit of a guess here -- I've used PSE versions 5, 7, 9, and now 11. In the beginning I didn't care for the Organizer, and by the time Adobe had improved it to the point where I might have used it I was using Lightroom for file management and so had no need for the Elements Organizer.
So, I've really only had casual and occasional exposure to the organizer.
But, I will say that many, many things appear to have been improved in PSE11, and I think that is probably true with the Organizer, also. I looked through my Scott Kelby PSE11 book (which I'm in the process of studying right now) and it sure looks as if the Organizer is very capable. I know they added a mapping function (similar to LR) and it looks as if the tagging function is easier to use. There's a find duplicate files function but I don't know if that is new or not.
The Editor sure has some nice new features. The new Refine Edge feature is a big help for compositing. I think if you upgrade you'll probably like it.