Koby got a girl his age with nice tits and good abilities in combat and everything, if she dies I'm legitimately gonna feel bad for him.
I think Boa and Koby will end up together since he's like Luffy and is also a giant Luffy fan.
I really don't want Hibari to die, though, I just think it makes too much sense. Koby has yet to have a tragic death to truly define his character. I thought it would be Garp, but, while Garp dying would be tragic, it's expected, he's an old man who lives for a fight.
Hibari's death would motivate Koby and Akainu in ways they never were before, which is why I see it happening.
I want Bartolomeo to get with Boa, but... uh... yeah. Who knows, though, who knows.