I think its gonna be like luffy's gear four that has tow transform one snake man and second bounce man i think gear five is gonna be same to have levels because in the series we seen every devil fruit user's last and strongest technique is its awakening so I dont think oda add something out of his world's rules for luffy just to make him stronger and the thing that will make sense its a staff like the pictures of Nika because and maybe some forbidden type of haki or a way to make haki stronger in series we saw people stronger than luffy without devil fruit and just haki so I assume its gonna be something related to haki or ancient Nika tools that luffy may find in elbaf
