So the Fighting in the live action.......they might need God to do the CGI for Luffy tbh cause idk his fighting style in the live action feels a little weird and awkward some times, its hit or miss for the most part (mostly miss). Zoro and Sanji are perfect , although one thing I will say with Sanji if your gonna have him chain attacks like he does in the anime, you'll have to make the kicks a lot faster then that, Im guessing slow motion is to show the weight of the kicks but in this case the only kick that needs weight is the final kick.
The calling out fighting moves thing........ Ummmmm they should probably just abandon that altogether or safe it for the last move or something,You do that and the fights in the live action improve dramatically, tone and everything.