When I fly USAirways I usually get routed through Charlotte. Here's what I don't like:
Bathroom attendants with tip jars. I like a clean bathroom, but having a woman in there greeting each person, cleaning every toilet between each use, and doling out paper towels to you...for tips? Kinda makes me feel not so clean...what if I didn't have a dollar? Then I'd just be a terrible person for not tipping her. Also, the smell of her spray is overpowering.
Gate attendants are really aggressive about the 2 carry-on policy. This annoys me to no end, especially on BIG planes that only have 20-40 people on them. My purse isn't large, neither is my backpack. I keep my meds, phone, and tickets in my purse, I carry my snacks, a sweater, and toiletries in my pack. The purse fits in the pack. I have a 3rd small carry on, which is my expensive work equipment. I am willing to plane side check it because most of the planes I'm on are too small for even a "regulation" carry on. Soooo...I tend to assume I'll be checking plane-side...which is why the purse generally isn't in the pack. This is the only airport I've been at where the gate staff THREE TIMES made me stuff my purse into my pack before boarding.
Other than that huge annoyance, the signage is decent, the food options are ok. It's just not a very pretty airport. They do have a lot of rocking chairs though.