I actualky now dread using T4 and actually prefer their other dumpy JFK terminal as its quicker. TSA pre has also become a total mess as the xrays closest to thr line have been closed the last 5 times ive been there. So tsa pre merges with another line creating a huge backlog with people who do not understand what pre means. So from 3 min wait to at least 15. Landed in their new gates (the last one like B55 maybe) WOW what a walk. Its just crazy and there are huge gaos without those moving sidewalks or what ever they are called. I think DL really needs to do something asap. I really dont care how nice a terminal is but i do care how quick and easy i can use the terminal. T4 is no longer the breeze it was when it was only international - oh and thry need another skyclub - i now skip the club simply because i dint want to walk there and then walk back to the gate - its not well planned at all