Two takes on this one -
1) As a traveler - easy to navigate, short wait times for check-in and security, clean bathrooms, plenty of space to sit, and decent amenities (newsstand/food/etc).
2) As a greeter - cushy chairs at the bottom of the escalator where passengers disembark that have served me well for delayed flights, fairly cheap & often free parking (if you're there a short enough amount of time), and a conveniently-located cell phone lot for when you're greeting your loved one at the curb.
There's not a lot of flash to DCRA, but it's doubtful you'll be stuck there for any significant length of time and in need of something new to look at.