They've remodeled terminal 4 recently but the new seating is rather uncomfortable plus it seems there are fewer TV's. The new restaurants are nice but $11 for a hamburger is not something I would pay. I do love the new flooring. As for the inside temps, it's rather stuffy in the morning hours especially in the summer. The worst part of terminal 4 is the gates at the end, the congestion with shoving several flights in such a tight area is horrible, wish they could improve on that. One thing that I have give them kudos for is the flow of traffic is pretty good due to the excellent use of signs.