I'm obviously biased since I fly out of this airport monthly - but this is one of my favorite airports in America. It is large and spacious without being overwhelming. There is great food and shopping available. I often get there earlier than I need to in order to grab a quick fro-yo from Pinkberry or some fresh sushi before my flight. If you are a US Airways Club member, their club is AAAAWESOMEEE!! It is huge!! There are a ton of snacks available along with coffee, tea, and alcohol.
There is a lot construction going on around the parking areas so I will say that parking at this airport (despite being extremely cheap) can be a huuuuge pain in the butt. The shuttle service is sub-par and is usually packed to the brim with people and their luggage. If you are planning on parking at the airport, leave plenty of time to actually get to the airport because the shuttle service is quite inefficient.
But for those making connections through CLT, enjoy your short stay :)