Comparing this to the most similar show I've seen, Exchange/Transit Love, I thought Exchange was better in just about every respect--the production quality, the set-ups, the cast, the emotional investment, the commentators, etc. However, Change Days S1 was still very watchable and entertaining.

But the fact that the couples appeared so dysfunctional, but in the end, every single one of them decided to keep the status quo, makes me wonder how accurately the show depicted the relationships. I especially thought for sure that Min-sun was going to dump her angry, incommunicative, macho asshole of a boyfriend, and also that Sang-mi had so much resentment towards Sung-ho that they were doomed as well. But it turns out that both couples are still together to this day, and Sang-mi and Sung-ho are actually married now. So clearly, there was a lot of stuff between them that the show failed to convey.

Also, even though the commentators were very likable, their reactions and comments were so banal and repetitive, it got really annoying. I don't automatically assume that this is mainly their fault, because it could be primarily the fault of the showrunner/director/editor or other staff that mostly influences the creative direction of the show.

Lastly, I noticed that in pretty much every Korean dating show I've seen, most of the participants speak with a provincial accent, even though they may currently live in Seoul. For example, 3 of the participants were originally from Busan. Even the way they act and eat, etc., makes me think of people who are from outside Seoul. Do native Seoul people not like to go on dating shows or something?