I have a few theories about Frankys new body:
Franky will have rocket boosters on his legs/feet, for flight. With his SUPER wide body, he can now have at least 5 cola bottles inside him. (or do you think he wont need cola anymore?) His eyes will be able to zoom so he can see SUPER far. And his centaur mode will actually be able to do something other then bind his enemies, like it will make him faster? Finally, he reinforced his back with bullet proof armor (he can do this with his SUPER long arms now)
Does anyone miss the old Franky?