I like layovers at CLT. I actually wish I could have them here instead of some other airport that shall remain nameless...::coughATLcough::
I've only had layovers, but from what I could tell, the airport is not that big. But medium airports are definitely not bad in my book. It is actually very welcoming, especially when they have as good amenities as CLT. So where CLT lacks in size, it definitely makes up in character.
There are rocking chairs all around the airport, which is great to just sit and break from the hustle and bustle of travel. It is very clean and bright with natural light. It kind of adds to the pleasant, relaxing mood. There are delicious food options and cute shops to browse.
Flights typical depart on time and connecting luggage makes it to its final destination.
For an airport, it has a relaxing vibe which is much appreciated :-)