Asbarta
Oh, great he invites outsider to his crew I hope in the future he invites Issho and Kuzan too. Also, I hope he gather many subordinate/minions like normal pirates too and I think the best way is in dressrossa when he defeats doffy for sure many of those toys and warriors in the colosseum are pirates the best to gather them and make use of those ships he collects they just waste in the inventory. And lastly gather strong pirate to make grandfleet example Law, Hancock, Kid, Pedro etc.