heck, i'll take any OP flashback over Naruto's repetting ones anytime...
sure, Naruto is emotional with all the 'everybody hates me' crap, but when it comes down to story quality, one piece takes the win, and that's why the flashbacks are so long.
so, as far as i'm concerned, the coming flashback is about to be great, the CP9 fight can wait a few more months, i don't think that luffy can beat luchy (or kaku and the other strong guy) yet, even if he can go up to 3rd gear... and not to forget that they still can go demon fruit and increase thier power levels ("my soru level is over one million, and I can go super saiyan"). I'm betting that we might see a cameo of some bigshot, i hope that ace will come and make short works off someone.