No I thnk it's a great upgrade. But I only really use my iPad for web browsing and while the retina display will be nice, honestly I don't feel it made that big of a difference for me. I still have to enlarge on iPhone to read certain websites. And I never use the cameras on this. LOL
I will most likely buy iPad 4
. Enjoy iPad 3 purchasers 
I will most likely buy iPad 4