I've used cameras for many years, its only recently that electronics has advanced enough to allow the use of multiple focus points. Its a convenience feature that lets the camera track a moving subject, or focus on a off center subject.what he said.
If you don't think you will use the other focus points, you might be better off to wait and see what a new model brings to the table.
One of the truly excellent features is AFMA, I'd avoid a camera without it. It allows you to fine tune the autofocus of your lens to your camera body. If you have a wide aperture lens, that can make a huge difference.
Don't go out and invest $$$$ in a expensive wide aperture f/1.4 or f/1.2 lens unless your camera has AFMA.