@Smash_Lampjaw:
Honestly, what's so outlandish about a chaotic war-type situation? We did just have a couple years of it after all. There are five Gorosei–between the end of the series and now let's say one of them singles himself out as a particular enemy for the Strawhats or seperates himself from the herd to make a dash for the big red button to activate an ancient weapon or whatever MacGuffin brought everyone together in the first place. Luffy moves to intercept and is confronted by Akainu who is then intercepted by Zoro. What are the other Gorosei doing? Perhaps they are fighting Dragon + minions, or Marco and company, or any combination of Supernovas + crew. There are many options. You said yourself that there would be many factions on scene in such a scenario.
I don't understand why things are so black and white with you. Why can't we discuss things that are unlikely without immediately dismissing them as impossible? It's a pretty boring attitude to take if you ask me. If Oda goes with the most obvious plan in all situations things would get pretty dull. How many of us saw the Strawhat Separation coming, or would have even believed it possible before it happened? I like One Piece because Oda doesn't always follow the conventions, not because I can predict everything that is going to happen 10 years before he writes it. Part of the fun in the wait is speculating on ways he may choose to surprise us... that's the way I see it anyway.
There is nothing outlandish about another war. In fact it’s something that I am expecting to happen at some point. The idea that beating up a group of old men who sit around making decisions could be as meaningful or epic as defeating Akainu is what I’m calling outlandish. I brought up the Gorosei idea as a joke, not something to take seriously. When the next war does happen what do you think the odds are that the Gorosei will be anywhere near the battlefield? Even if a situation like that arises it’s far more likely that Luffy will hold Akainu back personally while he sends crewmembers or allies to deal with other threats. Regardless, it seems like I have the enviable job of having to convince you of the difference between an extremely unlikely possibility and a legitimate outside shot.
While it’s true that Oda has to mix things up in order to keep the story entertaining, there are also things he has to make happen in order to satisfy his readers. One of those things is to make defeating major antagonists as epic and meaningful as possible. Akainu being defeated by anyone other than Luffy would clearly have plenty of shock value, but unless you can figure out a way to make it as meaningful or more it just doesn’t work. Oda has just introduced Akainu for the most part, and as such has only set up the basic dynamics for the dispute between Luffy and Akainu. Because of this, unlike BB, there is still a very slim outside shot of someone other than Luffy defeating Akainu. When you start trying to calculate the odds of it being a specific character like Zoro or Dragon though, you enter the realm of extremely improbable possibilities.
This is the kind of thing where the crux of your argument is simply that it’s not impossible because anything can happen. You need to understand, when that’s all you have backing up your idea it doesn’t deserve a 5% probability. What you are saying gives Zoro as good as a 1 in 20 shot at Akainu’s head. As far as I’m concerned his odds are 1 in 100 at the VERY best. If you want to say that there is a 5% chance of someone other than Luffy taking down Akainu then I will leave it be. I don’t think it’s quite that high but at least I can deal with it. The idea that Zoro’s chances alone are that high doesn’t work for me at all though.
Lastly, while not everything Oda does is totally obvious, it all makes sense and has meaning. He doesn’t surprise his readers for the sake of the surprise. Just because we can’t see everything coming isn’t an excuse to try and pass off near impossible scenarios as relatively plausible possibilities. It especially bothers me that you tried to compare a very unlikely possibility of this sort, to something that was clearly foreshadowed and made perfect sense like the crew being separated. I can’t tell you how many people saw that coming, but I can tell you that you’re speaking to someone who did. From the end of Thiller Bark until it actually happened I had a nagging suspicion that Oda would use Kuma to send either Luffy or Zoro on a solo adventure. By showing the crew being defeated, plus making a display of Kuma’s ability and his suspect loyalties. Oda made it clear both that the SH were not yet ready for the NW, and that separating them in order to make them stronger was a legitimate possibility. What I didn't see coming was the whole crew being split up or the ID/War arc. Not everything has to catch you entirely off guard in order to be entertaining.