Basically when they're at Urahara's talking about being outnumbered and outgunned, further speaking on how Kageroza couldn't seemingly duplicate Ichigo for a Reigai because of his inner Hollow, I was immediately thinking, "Hey guys, take a trip to Hueco Mundo to recruit some old allies!" or even hit up the Vizard to get them some more fight time.
But yeah, instead they go with some of Ichigo's remaining energy being trapped in the Cleaner, so they go to claim it while he winds up saving himself after the first time he got sucked up because time doesn't apply there. Kind of annoying since we know he'll have to lose to sync up with the manga plot eventually and just seemed like they missed a good chance create some more varied fights.