I do like KH days. Though it has a slow pace, I found the story quite enjoyable and the panel system was fun to use. And I don't find the missions to be repetitive. It only felt boring when I tried to complete ALL the missions 100% from the beginning. It seemed more fun when you DON'T do all the missions for the particular period and just do the compulsory missions and one or two optional missions before advancing. After all, I can do the 100% shit later after finishing the game.