@Daz:
Personally, I'm still waiting for Bach to pull out the Flaming Fight-Extending Skeleton Horde.
After all, Bach (well, Royd) did name a couple of them. You give them names and suddenly the chance of their reappearance increases.
Or Kubo just forgot, seeing how they didn't even appear in the last flashback.
But you just made me realize Bach should still have Yamamoto's Bankai, something I've completely forgotten. Since he's now something of a god, he could just use Yamamoto's Bankai and turn Quincy who are trapped in it into full blooded Quincy again. There's a severe shortage of bad guys compared to (somewhat) competent good guys, anyway.