Currently 2Yonko alliance can do a lot of damage which WG can't afford.
I mean there Shichibukai system has collapsed.
They only got Buggy, Boa n Mihawk.
Admirals - Fuji, Green bull, Akainu n Kizaru.
Thats like 5strong guys.
Where's 2Yonko will have atleast 6yonko commanders in total which means...