User blog comment:Sunnythousand808/Will Koala Join the Straw-hats?! (Chapter 623 Comments)/@comment-3079795-20110504050742

I think that's a pretty awesome idea Sunny! In my eyes that would clear up the whole deal with people wanting a Fishman on the Straw Hats Crew, albeit as a compromise. Her dream would be something along the line of proving that Fishmen and humans aren't so different and can coexist.

However, I do think it's too soon for Oda to add another Straw Hat. We are all just getting accustomed to the time skip an how all the Straw Hats have changed, adding another crew member would just be overkill for OP fans!

Short of joining the Straw Hats, I wouldn't be at all surprised to see her pop up and play an important role in the unfurling plot of the Fishman Island arc.