The best thing and what keeps me coming back is the covered parking. The sun is way harder on a vehicle than the rain and though I appreciate loading and unloading in a dry environment, a roof that is larger than just my car which provides shade all day and not just at noon is what I want. I also like being picked up and dropped off at my car, but your competition also does that.
Quick and always on time. The only improvement I would like to see is making people with pets clean up their pet hair. The ride back from the airport, a lady had a husky and the dog hair was all over the back seat. She didn't even cleaned it up.