Seeing the flowchart with Chizuru/Satsuki did make me wonder about some of the partner characters. Who are regarded as the best and worst partners? I know it depends on the character and what kind of playstyle you have or what you want to accomplish. I just didn't know if there was any sort of agreement on this. I'm gonna take a wild guess here and post what I think.
Good: Ma-Ryan, Rina, Satsuki
Pretty Good: Yu, Yuma
Okay: Serika, Camyu, Mizuki, Rathty, Llyr
Weak?: Octavia, Yuki, Ulthury
This was just a an attempt. I was just curious to see what everyone thought.