User blog comment:Jhipot/Allies of Straw hat pirates/@comment-4605926-20130407124940

Interesting, I like your idea. Let's see the possible ally candidates:

Heart Pirates (obviously, they're in alliance with them).

Heart Pirates' allies if any.

Kinemon and Jinbe (if they don't join the Straw Hats that is).

Crocodile and Daz Bones perhaps if they'd share the same goals once again.

Ivankov (pretty straightforward since he's Dragon's subordinate).

The different characters' respective trainers and friends throughout the timeskip (aka Heracles, Perona, revolutionaries [Robin+Luffy reason]).

Hancock maybe since she has a huge crush on Luffy.

I wonder if Rayleigh would tag into fights at some critical point. He definitely wouldn't constantly be there since that would be a little overpowered if you ask me.

Bentham if he's alive.

Different colosseum participants that will take a liking in Luffy during the fights.

All of this really is just pure speculation, though I do like the idea of the Straw Hats having some sort of permanent allies which aren't just a one time thing. This arc is full of surprises of many kinds. I can barely live on a chapter per week...