I think you're overreacting Goral. I can't decide now whether or not this chapter is good but it gives multiple ways to proceed. If it appears you're 100% right than it's weak(i hope not), but even if Cassy kill ABs but in reasonable way, and same for Pissy vs Riful doll it will be a little over average. But whta if Priss will get killed? It is possiible because she is weakened by fight with destroyer and it could make further plot more unpredictable. Same goes if ghost will be able to put Cass in her senses again and she will help them, but she can just go away ant take her region too(hmm Cassandra of the South?). And there is still small chance that Dae will perform some "deus ex machina" action. Anyway, it's not like there is only one straight way.
What i agree with is that ghosts should be more confident, and try to do something not just watch others having all the fun :)