@MarcelloF:
Why and how the hell should Nami suddenly be on Amazon Lily?! oO
here is my theory on that
The war just ended, we see and hear stuff around the world and no plenty as well.
1. 100,000 marines, Admirals, Vice-Admirals, ect are all at Marineford.
2. We see that marines are needed around the world, most likely due to being thinned out, since such a huge and respected part of their force (100,000) is all at Marineford.
So now what needs to be done? They need to get those 100,000 marines back to their stations or where they are needed. What does that involve? SHIPS. Lots of ships. They need how many ships to send these marines and a huge number at that of marines around the world.
Next we have Marineford and Impel down conditions and personal. Impel Down and marineford are like wrecked big time, and at least Impel down is big on casualties and injured people that need replacing or temporary placement. There is more than 250 people in Impel Down (the number that escaped at least) so there is still plenty of prisoners to still watch in impel down. marineford was just devasted by WB and BB's quakes and other events. They will have to have temp spots to work or move to new location for time being while repairs set in.
So we have major repairs needed, personal issues to fix and all working in a new place and not the standard. Plus a bunch of ships sending people to the places they need to be in order to stop the uprisings around the world. Basically what i'm saying is that it's very understanable that they need to wait a few weeks to have the resources to send a force to attack Amazon Lily and Boa Hancock. The reason for the attack is either due to them finding out and learning how she has betrayed them either from smoker/sentomaru or even worse finding out about impel down. Or it could be something different from the ABOVES, like Doflamingo did to Moria.
Now on to the defense of Amazon Lily. it has been some 3+ weeks. Since its three weeks so far, anytime from now to when it could happen. Don't know all of what the WG does, so limited on situations. but lets say we send a Buster Call and also send Doflamingo. Doflamingo for reasons he already was seen taking orders to eliminate Moria so understandable he may do same for other warlords, and also an arc dealing with not only WG, but a man who not only has ties with slave auction, but also has a devil fruit that allows him to essentially have control over anothers body would be great stuff to bring out and emotional impact to Hancock, also potentially revealing her slave mark to all the amazonians.
The battle can go to your imagination to how it will all play out exactly, of course with AL and Luffy winning as outcome, but I believe that at some point we have the tide of the battle hugely in the favor of the WG and seems that it will be for sure doom and everyone dies on AL and luffy loses and so on. But then the strawhats arrive in the thousand sunny via paddle dock, which since they are not seastone coated results in their ship being spotted big time by all the sea kings in the sea. They either outmanuever in paddle or combination of coup de burst and so on, but regardless they can move now unlike going merry in the windless calm belt, and then they arrive to amazon lily with hundreds of sea kings in tow. All of a sudden the buster call ships see this ship coming and hundreds of sea kings behind it and be like "omg, holy shit, what do we do" Check out this clip of Serenity for example
XX0IXHMuy7U
Thus the arrival of the strawhats and joining in on battles of close counters for most, with hopefully Usopp, Nami, Robin and Franky still on ship doing some sweet ass fighting of sea kings and battle ships with the sunny's weapons and their own. Jimbei also is there as well, obviously and helps with sea battle of the buster call and protecting sunny from sea kings, while the remaining strawhats are on other ships or amazon lily fighting the big dogs that came to destroy amazon lily while Hancock and Luffy (with a renewed vigor and drive) take care of Doflamingo. battle ensues, and so on to the victory and celebration and then tearful goodbye where where then we get to the decision on whether Hancock join's or not.
How do strawhats get there you ask? Well simple, Ivankov. He is currently heading to Kamabaka Island, where Sanji is at or heading back from already. They meet somewhere on sea like mr. 2 met us heading to Arabasta, or they meet on the island and Sanji gets a ship then. Considering AL is so close to shabondy and Sanji following vivre card heading there and also shabondy/AL at red line it is understandable that their ships would cross if Sanji had already left and not still on Kamabaka island. Sanji returns to the Thousand Sunny, other strawhats are there already or some coming in just then as well and they all head off to AL since Ivankov told Sanji where Luffy would be, if not returned to sunny yet.
Thus returning back to my story of them arriving in epic spread of Thousand Sunny being chased by hundreds of sea kings, followed by epic spread of all strawhats (minus luffy) standing at front of ship ready for battle.
This whole theory of mine has no idea what Law and his crew have for involvement in this. They help fight? they have left already? don't participate? leave when WG arrives? I have no idea, what would work best.