Oda is weak, having Imu only cut off Gabans arm as a consequence of fighting him instead of killing him off.
I see you Oda.
Here is how Oda adds "drama" to the story after timeskip: he cuts off a character's arm (Kid, Law, Perospero, Inuarashi, Hawkins, Kiku, Gaban). He kills off allied characters who were recently introduced and are tertiary figures to the audience (Ashura Doji, Izou, Pedro, Vegapunk and his satellites).
Honestly, anyone who defends this kind of writing is being intellectually dishonest.