Okay, whether you enjoyed the CP9/Robin arc or not, you have to admit it was similar to Arlong. Lets recap major events:
Warning: Possible Arlong and CP9 spoilers below.
-Nami betrays crew.
-Nami does everything she can to fulfill her dream without the help of the SH's.
-Zoro's twin katanas break.
-Zoro mistrusts Nami for leaving and asks the crew if they really want her back.
-Nami nearly gives into despair when Luffy agrees to help.
-Zoro's dream is delayed and put on the line when he agrees to help his friend.
-Traditional one-on-one fights ensue (sp).
-Zoro's opponent is a "goofy", comedic villain who uses swords in an unusual way.
-Zoro buys replacement swords shortly after.
All events listed above happen in one way or another during the Robin arc (minus the last one). My thoery: Zoro is plot device for each time the crew splits up. I also believe Zoro will get another legendary sword after this arc.
When these kinds of things happen, Zoro is there to keep the crew united and question their friendship. I don't know what kind of sword Zoro will get, nothing has been foreshadowed, but he seemed to really like the Yubashiri; which leads to my other theory:
Tashigi will take the next legendary sword he tries to buy. This will force him to use a generic sword and try to get it back, but in the hands of Tashigi, it is dangerous. Assuming Oda makes her stronger than before, her and Smoker give the SH's a good challenge. All seems lost, and Zoro wants to get the sword back but can't without Sanji's help. Sanji then must make the choice to hit a women or let his friend's dream suffer. In the end, his choice will spell out the Mugiwara's untiy.
Please rate…