I have never disagreed this much with a comment. Haha.
Luffy + Akainu = RED
Zoro + GreenBull = GREEN…(most likely a skrimish with Fujitora but nothing else)
Sanji + Kisaru = YELLOW and to add more, Sanji has always been all about speed. Can even go invisible now due to how fast he is moving. Who is the fastest man in One Piece? Kisaru…
Thats all I have to say…
Have your own twist at it as you like.
Akainu doesn't belong to Luffy only hence why I won't be surprised if he completely skips Admiral fight and goes for one of Gorosei or Im already.
Zoro vs Fuji and Smoker vs Sanji seeds been planted in Stamped despite the movie being non canon.
I'm not a fan of this Kizaru vs Sanji because of speed affinity.
That way of thinking was crushed in terms of Sanji vs King where entire Sanji fanbase believed for some time that its written in the stars cause suit, flying and kicking.
The only way I could think of it is if Oda will do a regular Boss and underlings setup which will lead to:
Luffy vs Akainu, Zoro vs Kizaru ( Akainu's RHM ) and Sanji vs Ryokugyu ( another one of Akainu's men it seems ).