As for wich crew members that will have/gain such an ability I'd actually say Usopp is a valid candidate if this isnt something you have to be born with.
Since his goal when starting this whole trip was to become a man of the sea or just a brave man. He's been fighting to push back his cowardly old style and strengthen his resolve in every battle. More then the other crew members except Luffy and Zoro I'd say.
Plus it would be hilarious and a much needed upgrade for him as he cant really advance much more just using his "sling-shot".
I heard life sucks, that's why I'm glad I don't have one.