This used to be my main airport when I lived in Charlotte. Now I only see it every once in a while.
Pros:
Free internet
Those rocking chairs!
Many quick food options
Going through security is usually quick
Cons:
It has really expanded into a very busy airport, it is way more crowded than it was 4 years ago. Too many people for my liking.
It is the hub for US Airways and thus flights in and out are frequently delayed, as I have experienced too many times to count on this airline. I have never experienced so many delays as at CLT.
Sit down stay awhile options are limited. It used to be worse but they have added some. My favorite now is Bad Daddy burgers. Yum!