I'm afraid I'm not sure who they are. And more than likely I have not even seen them fighting since I can only remember the people that appear frequently, due to difficult Japanese names. ^^; So I could not really say anything about that sort of fight.
Urahara's Bankai should be pretty interesting then. I would imagine that we will see it eventually since he is probably going to be called upon to fight at some point. It would be a real same to live things so mysterious with him that you don't get to see what his Bankai actually is. It probably has something to do with blood since that seems to be what the Shikai and abilities he has revolve around.
So did Ichigo develop projectile abilities with this Zanpukto or are those arc of energy just focused attacks from his training? Because I see him do it a few times in videos on youtube and they obviously have not happened yet. The only time he did something was when he made that big crater focusing his Zanpukto and spirit energy. This looked quite a bit different. Does Zengetsu have an element or special abilities? Aside from increasing Ichigo's speed during his Bankai.
Bleach was on this last weekend, unlike last time. So I finally got to see Kenpachi and Ichigo start their fight. Though not a lot happened, just Ichigo hurt his hands from trying to strike Kenpachi and failing. The guy really is insanely tough, but having more focused spirit energy helps too. I can't wait to see more of their fight.
I didn't make anymore Bleach Banners, since I ran out of images to use. If I had more I could make some more. But I've exhausted the limit supply that I had.