Ahhg.. I'm mostly annoyed considering how easily the captains were beaten. If they weren't, and Renji had shown up like a boss, then I'd be fine with it..
Don't forget, the two guys who had their asses hand to them last week were captains. Remember what that title means. Because it seems the stuff Kubo is pulling out right now, is making people forget that these Shinigami are meant to be the cream of the crop.
Also, this 'training', why not just make all the shinigami receive it? I know what you're going to say. Plot. But it doesn't feel right, how they can spend some hours, to a day, at the Soul Palace and pull all of this off?
Either Tite Kubo can't manage his power levels, or Yhwach is right, and the current Gotei 13 are absolutely weak.