I was here since chapter 340, I wish I was here during Skypiea or Alabasta to see how people discuss the story and make wierd theories and speculations. If I was olny here at chapter 332, I would love to see how people react to the Luffy Vs. Usopp fight.
Here are theories and specultions I thought up since 340:
1. Nico Robin being possessed
2. CP9 are shadowy cult after the ancient weapeons
3. Sanji or Usopp breaking in the Galley-La HQ to save Luffy, Nami, Zoro, Chopper, Paulie and Iceburg.
4. That ethier Luffy crash in Enies Lobby or on Yocozuna's back after being throw out of the HQ.
5. Thinking that Luffy and others would find Franky, save Usopp before the CP9 and the Aqua Laguna shows up.
6. Robin getting on a small boat after the Galley-La HQ attack to leave the city.
7. That Robin's past is closly related to Gold D. Roger and though we would never see the flashback untie the end.
8. That Enies Lobby would be a castle
9. The Buster Call having laser beams
10. That the Sogeking was from Elubaf(Before Ooshi confirmed that Sogeking was Usopp.)
11. That after Spandam punched Robin, she'll realize her mistakes and ask Luffy for help.
12. That Rnies Lobby was part of the Marine HQ
13. That Kaku wold eat the Diamond fruit.
14. That Usopp will fight Kaku
15. That Blueno would fight Sanji
16. That Iceburg and his shipwight would surround to warehouse to fight the CP9
17. That Zoro, Nami, Chopper and Luffy would be pushed into Franky's warehouse by the Aqua Laguna
18. That Sanji would do storm kick
19. That Luffy would invent a Gomu Gomu version of Rokusiki
20. That Sanji would be defeated and captured before he reach to CP9.
21. That Tom would die in chapter 353
22. That Lucchi killed the Franky Famliy
23. That Robin and Usopp would die
24. That Sanji was terminated
25. That Oliva was dead already in the start of the flashback.
26. That Califa would ate the Rabbit Rabbit fruit
27. That I too, thought Luffy would float in the barrel.
28. That Dragon was going to show up in the Agua Laguna
29. That Usopp would meet Luffy without being Sogeking.
30. That Robin, Spandam and Lucchi are on the ship heading to the GOJ.
Many many others but I just leave it like that.