This flashback didn´t need:
Garp or WB
Honestly, the hunting plot was kind of pointless as well, just make it similar to Ohara, where only the Davys are to be taken out, which at least seems like something you can cover up, as opposed to just an island of dead people
Shakky stuff
Arguably, Roger doesn´t even really need to be here. Wouldn´t Harald vs Xebec be better? You could even build up Loki´s resentment towards Harald because of this, while the government grows in favor of Harald
Domni reverse(this shit just looks straight up lame)
I don´t like the idea of everyone knowing about Imu, only Xebec should have met him on GV, and not 20 years prior, lol.