http://www.mangastream.com/read/one_piece/55562012/1

I didnt read all your theories, but:
First of all it has yet been said that noone ever beat Roger in a fight. It's also been said that Roger was very satisfied with his life, cause he achieved all he ever dreamed of. Another thing thats been said in the manga is, that Garp is the one who "cornered" Roger.

Well, to me cornered means that the marine somehow surrounded the ship ROger was sailing with. So i guess its more likely, that Roger made a deal with the WG, that he goes with them without fighting, but his whole crew may escape. I mean Roger is a "D." as well, and they all seem to have big goals that they aim for. But Rogers achieved everything, so why wouldn't he surrender to the WG if he could save his crews life (or his son's/friends/whatever)? I guess he rather fears a boring life than death.

Brooke will join. He wants to meet Laboon again and Luffy promised Laboon to return to him as well. Since Brooke probably won't make it back to Rivers Mountain on his own, i think he is going to join the SH crew.

Linkin Park - Shadow of the Day
really nice song!!

@Kaze:

On the sixth day, Oda parted the mountains and the seas, and looked upon His creation.

"My," He said, marveling at His handiwork, "what a grand line of sea that is."

And thus, the Grand Line was born.

…What, did you never go to church or something?

Muahaha, just too great

Ok, we know that Oda semi-copies stuff from old myths/tales.
Devil fruits are his way of the old "I sell my soul to the devil and get a wish/a power/something special granted". The result of those "sell your soul"-treatys are, that you suffer in hell, after you die. As far as we know, a devil fruit has no nagative after-life effect, but as it instead has a negative effect in life, it could possibly be, that devil fruits grow in the sea, as thats where you suffer if you get you there.

Luffy vs Bellamy
loved that 1 hit knockout

One Piece in german …. I'm curious how good that one will be x]

i'd love to see Buggy again.
But i guess it will be Foxy

i was actually excited when they said after Water 7/Enies lobby that the next island would be a merman island. I'd actually like to see that.