I watched Arrested Development after finishing LOST, and it was a big change. An action and drama TV show turned into a humorous show. Anyways, I found Arrested Development to be decent. The first three seasons was the seasons I really enjoyed. It showed them how they dealt with their family, what they did, and how they felt towards eachother. You can see which relationships are good or decent cough cough Buster and Lucille, and some relationships which were... not that great, such as GOB and Michael, or father son, Michael and George Michael.
The last season was a big disappointment after a hiatus. It basically paved the way for the ending, and that's how I felt about the last season; an ending season. I don't think Arrested Development will be returning, or they will live another season since it ended with a "next time on Arrested Development" but after that, the show is done.