The time skip feels natural, and even though I was initially skeptical about the premise that Hank and Peggy moved to Saudi Arabia for years (seems so out of character for them), I now appreciate how it allows us to see the Hills react to the ways life in the US has changed. It was a great choice.
Great series/season. The different voice actors were quite noticeable but after a few eps you accept it. I can't think of any other criticisms, and even that's not really a 'criticism'.