Prototype

Okay my idea for now is to develop a character in one piece up to admiral level, Around 2 Billion Berry .

My idea is : Izo level marksmanship + Vice admiral level combat without gun through training, resulting in a bounty of 500Million berries 

secondly developing techniques like the bullet bending concept from the Wanted movie . along with the extreme heart rate concept from the same movie similar to the gear second of Luffy resulting in a bounty of 900Million

third can be the gold finger for him, outside of haki he gets all skill of "Sakunosuke Oda "Bungou stray dog. like gun fighting skills and future vision resulting bounty of 1.5 billion. 

so that's my idea and with increasing experience and haki manipulation can hope to reach the general level, so whats on your mind? share it