I think it was good until Jab We Met coz though he portrayed confusion in his characters in those films, there were always someone balancing them out.
For instance, in SNT Abhay and Aisha didn't know what they want and then suddenly changed their minds BUT the family element was constant and strong throughout the film with principle characters. They balanced out the chaos with their more relatable and practical thoughts.
Same with JWM.
While Geet was all about living her life her way and doing what her heart wished and living on the edge, Aditya was the perfect foil. He was practical and a staunch believer of the everyday rituals of life. In the end, Imtiaz showed a great balance in how neither approach in extremes is the best idea. Aditya was miserable with the way he lived his life with regulation, and Geet also eventually crashed with her lifestyle. The best approach perhaps lies somewhere in between the two, which is the balance they struck at the end.
Post that though, his films have lost the balanced characters.
Love Aaj Kal, both leads were impulsive and made rash decisions. The family element was nonresistant in the film. No one to provide the alternative way of life.
Rockstar was also all about cheating and affairs.
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