@ZapdosYour character could gain the fruit at later time, when Logia wouldn't be so untouchable. My character uses Fishman Karate so a fire logia wouldn't be an unbeatable opponent for her, but any other enemy we fought early on wouldn't have much of a defense against it.
That could work. I actually imagined him using the fruit because I thought it'd be an interesting way to supplement his doctor skills, not as a way to be overpowered.
I might have to see what portions of the CS from the other One Piece RP can be adapted to this one!