^if zero squad comes it will not be hinted at beforehand but once the situation is totally screwed simply appear outa nowhere with a grand shanbang - prly at that point suprisingly it gets revealed the quincy CAN use the bankais after all (which of course they were only ever ripping of the captains to be able to face zero squad trolololol
)- which they then move on to indeed do and pwn zero squad outright so that Ichigo has a reason to come help in the first place
(well, I hope it will turn out to be slightly more complex - if there IS something i still have some hope left for it is zero squad, especially if the whole ichigo parents backstory ties in there...)