What devil fruit do you guys think has the most potential to be the strongest if used correctly? We have seen a lot of powerful fruits like Buggy's and Alvidas go to waste because of an owner who wasn't that strong(Who knows about alvida anymore).
I think Mr. 5 had a great devil fruit though. If bombs worked how they did in the real world in one piece it would be incredibly powerful.(In One Piece it seems like NO ONE not even the weakest little civilian can get killed by a bomb or shockwave. Someone can place a bomb on your head and all you will get is bruises is what it seems like).
Foxy's noro noro beam would also be incredibly useful if given to someone else. You can kill even an admiral who probably wouldn't be able to change his body into his element with the slowed reaction in 30 seconds. If given to someone like zoro this would be really strong.