User blog comment:AYET/The Strawhats at the next level up/@comment-24638955-20140418164931

I think it's going to be developing what they already have instead of new tricks.

The only things I could see happening as of now maybe are:

Luffy aplying his busoshoku techniques in 2nd gear as he does with Red hawk.

Zoro using developed forms of his previous techniques and diferrent ashura techniques.

Chopper controling better the "wavelength" of his fruit, unless he already does without us              knowing.

Brook using more of his music ilusions/control or more "power type" moves as swordman (flying    slashes) eventhough he is a speed one.

Nami with diferent/ developed/ combined climates.