User blog comment:Kaido King of the Beasts/Chapter 783: Dead Men Get no Insurance/@comment-24850639-20150409140541

I think it became general consensus that a "Gear 4th" or something like it was necessary, due to how easily Doflamingo handled gears 2 and 3. I mean that's Luffy's entire arsenal right there basically. The only other way around this would have been to wear Doffy down by connecting with Gear 2/3 attacks, but I think at this point its safe to say Doffy has as much endurance as Law, if not more. Whatever Gear 4th is, it literally HAS to beat him. Luffy's got no other options. For the plot's sake, I REALLY hope (and believe) Gear 4 was something planned out. On the way to Enies Lobby, Luffy made a comment that suggested he had been working on a new technique. This turned out to be Gears 2/3. During his battle with Blueno, he explained that he thought of these new techiniques after the L to Aokiji. However in the heat of the moment against him, it really just seemed like Luffy pulled the gears out his ass. The background on them  weren't sufficient for me, and we had to listen to Lucci to explain just what the hell Gear 2 was exactly. The explanation of it seemed way to complicated for Luffy to have just thought of it out of nowhere (at least the scientific part) yet he was already quite well-versed on how to use it against Blueno. Gear 4th will def be as big a part of his arsenal from here on out as 2/3 are, so I'm begging for SOME kind of explanation. As far as what Gear 4th actually is, I'll stick to my guns about it heavily involving haki. I don't think anyone expected him combining Gear 2 and haki to create fire, so I think we'll get to learn some more info about just how Buso Haki works with this new gear. By all means I know we don't have the full picture yet on everything that haki is, and it seems like it'll be an absolute necessity for all future opponents.

As far as the birdcage goes, I think Luffy will get take Mingo down before anyone dies. This is twice now he's said he won't let anyone die, and I really hope Oda wouldn't allow Luffy to allow anyone to die. Otherwise it just looks like an empty promise, which is something Luffy definitely doesn't do. At least hopefully not this early. I really don't see what the hell Sabo is doing now. I thought him and Koala would get Law out the way/handle Trebol, but now it seems they'll just sit around and wait for Luffy to win like everyone else.