-Teach wants to use a "marine Hero" to negotiate with the World Government the status of King of an acknowledged Kingdom (probably to be granted permissione to show up in Mary Geoise as a guest and not an as enemy, just like he did with his former Shikibukai status and the Impel Down incident)
-He kidnapped Koby, the "mere" Hero of the Rocky Port Incident
-Monkey D. Garp shows up in his headquarter, the fucking HERO of the marines, without a proper military backup (2 rear admirals, One captain plus Koby, Helmeppo, Tashigi, probably Moria at some point, anyway they won't die there) because all units were sent to Egghead Island
-Law and Kidd have been beaten, in the New World now there are only the new four Emperors, while Kuma and the Revos are openly fighting the WG itself: a battle royal is coming, a huge incident Is about to happen, Luffy has 3 Red PG and Laugh Tale isn't a dream anymore. Even more, Teach and Shanks also recently gained the Red PG and are actively moving to claim the throne. The Yonko now HAVE to fight, they have to ho against each other.
What do you think could possibly happen?
Just connect the dots, 'cause it's straightforward