"Will a pirate be the final villain when Oda is hyping Nika as the saviour of the world against WG who is led by Imu "
That's how silly this question is
BB being the FV died completely when Imu was introduced
Don't be like zoro fans who believed into ZkK
No matter how logical your arguments may sound, Teach isn't the FV. Even his crew aren't top tiers, they got clowned so much.
