Isn't Hakuryuu's mother the one working with Al-Sarmen? Also, it could easily be indeed a facade, but Kouha is a good boy as it seems.
Caring about his henchmen doesn't change the fact that he's a sadist.
Would the limit be endurance? How long he can use the fruit? I feel Oda only scratched the surface with Marco's fruit.
Yeah, fatigue is generally the weakness of characters with that kind of ability. Marco's ability might only be able to heal wounds without getting rid of the fatigue that would result from a long battle.
We don't need a 2nd Crocodile, even more considering that there's a high chance of another former Shichibukai getting involved in Kaidou's takedown (Moriah).
I forgot that guy was still around. But I guess he could show up even if he doesn't work together with Luffy.
Cavendish also seems to match Hancock's selfishness along with her vanity and genuinely divine looks, while Duval seems to be a genuinely good guy when not worrying about his looks. Maybe Cavendish is also destined to fall madly in love with a Strawhat…
I hope he tries to hit on Nami and Robin just to get his ego crushed by their "stare"
By the way, I have the feeling that Doflamingo won't meet his downfall in this arc. I kind of expect Law's plan to culminate with Doflamingo joining forces with him and Luffy in order to survive the wrath of Kaidou.
I really liked what Oda did with Crocodile during Impel Down and Marineford, so I won't mind if he tries to flesh out even more Doflamingo's character rather than having him do something that would make Luffy want to kick his ass by the end of Dressrosa.
This sure brings me back to the days when people used to read OP chapters in MSN groups. IIRC the friends of the owner of one of those groups were allowed to manage their own section for mock chapters such as this one.