User blog comment:AYET/The yet-unknowns/@comment-3119203-20130104044734

1. I think this was metaphorical, since the Straw Hats rarely revisit islands they've been to (the only ones I can think of are Sabaody, and Marineford and Amazon Lily for Luffy). We'll see though.

2. I don't really see how this can be haki, so I'm chalking it up to unique ability.

3. Wires or puppetry. Apparently everyone can fly now too.

4. They grow somewhere. Or else normal fruits are "inhabited by demons" and become DFs.

5. Ugh.

6. Meh.

7. Danger, Keep Out - as shown by Smoker and the Marines, they must have thought that there was still some poisonous gas left over. Aside from that, it's an island with extremely varied temperatures (including volcanoes and the like), so it isn't exactly safe. The skull may relate to the giantification process that the Marines were conducting.

I'm personally more interested in characters we haven't seen, or ones that haven't been fully explored. For example, Big Mom and Kaido are nothing but silhouettes to us right now, and we have hardly seen any of the Supernovas (except for Law....), Garp, the Blackbeard Pirates, or Sengoku fight. I'm still itching to find out who the two remaining Shichibukai are (it would be lame if Buggy was one), not to mention the admirals (if there are some).