I would prefer to own A and keep B/C swapping hands than to be constantly losing C/B. Owning at least 1 zone gives your team a solid base. YES, when you control C/B it is irritating to see A being captured though. That tends to trigger me to pull way back to dominate the C spawn until A is returned to the enemies. This can be a vital regrouping moment for a good team as it takes pressure off B. I think generally speaking that your problem is that people don't know how to play control and Shores of Time is one of the BEST control maps for interesting play between good teams.