I like the free wifi. Bonus points there.
They've got a great system based on numbers and colors on the doors so if someone is picking you up in a car it's easy to tell them "Hey, I'm standing next to the blue 4 door 26. However, if you're like me, the last time I was picked up at this airport by my little brother who lives in Phoenix we discovered that there is a 4 South and a 4 North... That is, we EVENTUALLY figured it out. Well, isn't that special.
You DO NOT want to change airlines in Phoenix. Not only do you have to leave the terminal and find an airport shuttle to take you to the other terminal (where you have to reprocess through TSA hell) but the airline didn't instruct me on how to do this. I went running down to the other end of the terminal trying to find the right gate only to be told I had to leave the terminal to take the tram/shuttle. Just TRY finding the right door to leave and catch the right tram. It was an adventure, I tell you. TSA check point was so backed up I'd have never have made my connecting flight. Thank goodness that flight was running late and the airline rebooked me on another flight or I'd have been SOL.
Not my favorite airport ever - Denver has way better food options, for example - but it gets the job done. And so can I on the free wifi.