I couldn't agree more! I still watch L&O: SVU but Benson gets on my nerves. At one point, every episode was revolving around her, and unlike Cragen, she would personally investigate all the cases. ARGH!!!! I was desperate for them to showcase the other characters already.
I also agree that there is not much more story to tell w/CarSaSon. If the show had developed Michael, hadn't killed off Morgan, and hadn't decimated the Qs, the younger generation could have become more important to the storytelling, etc.