I'm in much the same boat on my Sorc. It was either to focus on healing primarily, or do a hybrid build, to be competent in PVP. Possibly others may fare better with pure lightning or madness and I just suck, but I've tried enough different builds in PVP and PVE to break myself early on due to respec costs. And the hybrids are the only one that really put me on the charts per se.
The 1v1 scenarios are just entirely different. Some classes it seems we can wreck fairly easily, and some hold their own well, but a marauder eats through hybrid dps sorcs like nothing else and a good PT can cause serious trouble.
I think you're right, a pure nerf would miss the point, because hybrid builds are really what makes sorcs feel viable in a PVP sense. And if you simply nerf, that's not going to be addressed.