Theory of The three modern weapons
Bonney = Shirahoshi
Hiyori = Toki
Vivi = Lily
Red (pink), Green, Blue
Modern weapons: Pacifista, New Pluton, ...
Ancient weapons: Sea Kings, Old Pluton, ...
At this point Bonney might as well be revealed as a Modern Weapon in parity with Shirahoshi. Commanding an army of Pacifista is to most of the world as devastating as commanding Sea Kings.
With Pluton being under Wano Hiyori could be the new commander. And we know Oda loves his color schemes.