@Veshv
I like the fact that Baku knew about Suteguma beforehand. In hindsight, since he needs the no. 0 referee, it should be a given that he is doing research on all other Kakerou members, at least the ones that have no. 0 as a referee.
About IDEAL and their battle with Usogui, there may be some situations where they can force a battle. Perhaps Baku might not obtain everything from this gamble, or IDEAL might come into possession similar requirements (tributes + no.0) and also compete for the surpassing the leader rights. I think it's possible for a referee to be exclusive to multiple members, and Caracal did say they had multiple Kakerou memberships, so they might not be out of the game yet.
One thing that is concerning is that even if Baku wins the Dotty game and gets the number, Macro still needs to input the number at the top, and both Macro and Baku (and Karl?) must successfully escape the tower, while fending off attacks from Hyougo and Leo, and breaking out of the SAT encirclement. It doesn't seem like Macro alone can successfully 1v2 Suteguma's group.
In this game, they also mentioned a lot of ways to make both players lose, so it's possible that Suteguma might get desperate and just a double loss. Baku might only obtain No. 0 here, and lose the 50 million and Karamete tributes (which would massively suck lol).