And so the shit slings. Predictable. Congratulations on making yourself a fool before the masses in your attempt of doing the same to me.
And...I've got to laugh at your "point" here a moment. Very enjoyable. So...absolute zero has not been done? You sure about that? Maybe you should look at a vacuum (no not a Hoover), a vacuum that steals away all heat and air. Sounds like.....outerspace?
And yes, it does freeze instantly, whether you like it or not. However, others being able to survive it (like the Espada) is simply put by Grimmjow. Rukia only managed to freeze a single layer of his skin, meaning that the first layer simply broke away as he forced himself to move again. Whereas characters like D-Roy were completely frozen through. This is just the benefit of uber Hierro.
And you can't say that the only being with a flame zanpakuto is Yamamoto. After all, we're talking about all of Soul Society and all of the Vizards. Its quite possible that there are many different flame bankai that would be capable of completely destroying the poisons Mayuri puts off.
And much to your dismay, the Grimmjow example is a prime one. Ichigo still experiences the debilitating effects of Bankai just like Toshiro. even more so due tot he massive amounts of reiatsu he wields. His body simply cannot hold bankai for an extended period of time when going at full force, it breaks his body, a fact we've seen many a time.
Indeed, Byakuya was hit, I said that, but apparently you ignored me. However, he was not able to be hit with a serious injury until Ichigo's hollow took over. Go back and look it over. Byakuya suffered no loss of motion, strength or speed until Ichigo's hollow popped out and tore him open. Byakuya remained faster in that he was still able to avoid all serious injury until Shirosaki took over.
And as for Ichigo doing better in hollow form I am in fact not advocating it. Seeing as how I've been saying that it was the hollow who accomplished it and not Ichigo. We've all seen how much more powerful Ichigo's hollow is in direct combat than Ichigo himself. So....you just got shot down there bud.
Now for Ulquiorra. Its not a matter of "balls" as you so eloquently put it, its simple observational duh. The wings he has consist of thin yet hard membrane, where the chest, arms, legs, ect would consist of a higher density of hierro, as we've already seen when ichigo hit Ulquiorra square in the chest with a melee Getsuga Tenshou and it simply game him a little scratch no bigger than four inches long. So swatting it away with a wing, a part of the body that would more than likely hold the least concentration of hierro, would be far more effective. But then again, I'm the common sense observational type, not the hot headed fanboy mentality that has been displayed.
So, I think that about covers everything.....yet again right? Oh and a heads up, I didn't get a Mocha, got a Frappachino, its warm out.