Free wifi, decent food options - yes it needs a bit of a face lift, but I'd rather have the wifi than shiny new stuff. There's a spa in D terminal that offers massages, mani/pedis and facials. it was tempting since I had 2+ hours for my flight! Would like a few more plug-ins, but I managed to find one in a bar (Home Turf near D34) with a sassy and sweet waitress to boot.
Security was way better than expected - tons of lines and competent TSA folks. I made it from the ticket area through security in under 15 minutes mid-day Friday.
And of course the slot machines are plentiful!