@rubia_ryu:
Sorry, but I just laughed. "Hey Mom, the Pirate King's so cool! I wanna grow up to be a pirate someday!!" You can just hear the poor mother crying.
Jinbe's efforts are already inspirational to the kids of the island. Him joining won't be nearly as great an impact.
Dude if anything Jinbe joining Luffy's crew will have more of an Impact than let's say Namur joining the Whitebeards,since Jinbe is a pioneer of the separation with humans angle ,along with Fisher Tiger & Arlong ,just the fact that the NFP uses the Sun Pirates rim in their Jolly Roger should express how much influence they have had on the last generation.
But the best part is if Jinbe joined Luffy's crew he could stop all the hate in directly by joining a HUMANS Pirate crew and by doing this he also keeps Tiger's general Anti government attitude without putting strain on the relationship between the species,like being apart of the Sun Pirates did.
Bold statement time: If Jinbe didn't proceed to join Whitebeard all those years ,you can bet he will join Luffy. Since thats more of a personal relationship ,instead of being on his side out of respect and Obligation like he was with Whitebeard.