User blog comment:WillofOP/Almost Nakama/@comment-4493594-20111207215937

Pulling the ship and emergency provisions. Nuff said. xD

Okay seriously, the sole fact that he's a fishman makes him perfect to join the SH. There will be times when even Sanji and Zoro won't be able to pull the DF users out of the water and that is why they need a fishman (Jinbe or not) or anyone who can actually breathe underwater.

Personality-wise, he's a serious guy. And after Franky and Brook we need one of those. Check.

Strength. He's a freaking ex-Shichibukai! Though, if he really joins later on he might be only 3rd to 4th strongest.

Just for clarification: I am on the side of the people who do not want to join him (yet).