Oda can very well end Teach in this saga too
Teach will remain the only Yonko anyway when all 3 fall, he doesnt even have to be above Roger WB kaido.
Just near them will make him Luffy hreattes solo battle.
BM making it past wano arc is 60% doable
Teach making it past Yonko saga is 55% doable
Still haven't refuted anything i said yet. "Oda will do this/that with the plot" you're forcing scenarios without proofs to grant Big Mom a nonsense fighting role. fact is, it's heavily implied Teach will outlive all the Yonko as the main/secondary antagonist of the entire story. "Teach is just a Yonko" when was it even implied that he reached his peak to the point of not further powering up? are we forgetting he's also part of the worst generation while Big Mom was reigning for decades? the other Yonko were driven to their very wit's end because they were in a deadlock along with Whitebeard for years, unable to evolve anymore as proven when Big Mom sought help from Elbaf in order to overpower the other Yonko.
On the contrary, Teach never stopped at a certain point like they did, he worked all the way up to the top and he's still climbing the PK height which Big Mom gave up on without external help. from a low-level whitebeard pirate, to an independent pirate captain, to a Warlord after beating the PK's son, to an extremely powerful new world veteran, to a newborn Yonko after crushing Marco. his growth is in sync with someone like Luffy/Kid/Zoro, after all he's part of the same generation but is a step ahead of his rivals. Him undergoing the Yonko stage doesn't mean he won't be able to reach something HIGHER. In contrast, Teach is 99% implied to consume the strongest Zoan soon fitting the number three theme roaming around him. when he awakens every devil fruit in his possession, there's literally no argument to be made for Roger/WB being above him, that's the simplest logic of Shonen regarding final antagonists.
None of the Yonko is perceived as significant as EoS Teach, therefore, no Yonko would have a bigger antagonistic role than him since He has been established as Luffy's most prominent rival and his biggest pirate enemy for the span of 700 chapters. not only showed the same carefree attitude/believing in fate like the protagonist but also encouraged him to pursue his dream. The parallels/links between him and Rocks D. Xebec (Yonko's leader) are many that's easy for someone to presume they're relatives/Teach's aware of him. and Sengoku said that Rocks was Roger's greatest enemy, Both Luffy/Teach are D. members too.
The order in which they would fall is: Kaido/BM>Shanks>Blackbeard
