The biggest surprise to me so far is the initial incompatibility of Clark and Boston. Everybody is talking about Clark's struggles, but Boston is having a horrible start as well. On paper I thought the addition of Clark would be a major advantage for Boston since Clark is such a good passer.
Clark having to adjust to the WNBA is a major factor of course, but perhaps her new teammates adjusting to her is just as big an issue. WNBA rookies have to adjust to a new system and generally learn to fit in. Caitlin has had systems built around her talents and how much she dominates the ball. Instead of the rookie fitting in and learning the system, the rest of the Pacers roster has to learn how to play with Clark.
I suspect in time that will happen, but the dynamics between Clark and Boston is an interesting subplot to watch. What seemed like a marriage made in heaven when they were paired up, is looking like they are preparing for divorce court instead so far.