So the Straw Hats are currently in possession of two of the four road poneglyphs (or atleast the copies). And after Wano it is almost certain that they will possess three of the four. That means they are 75% there and closer than anyone else in the world at achieving their goal. At some point Blackbeard too has to possess some of the road poneglyphs and he currently has none (unless he is in the possession of the fourth one). The public only has knowledge of two of the four road poneglyphs with just a few people in the know about Zou. (its unclear that Blackbeard knows about the one in Zou) So if Blackbeard wants to move forward and not fall behind he has to begin with the two poneglyps that reside in the heart of two Yonkou's territories. Now one popular theory is that Blackbeard will swoop in when the Pirate-Ninja-Samurai-Mink alliance defeat Kaido, kill him and steal his devil fruit and maybe even the poneglyph. But thats risky. From Blackbeard's perspective he can't be certain if the alliance will actually be able to beat Kaido. Even if it weakens him and his crew and Blackbeard launches an attack and wins he still risks his own crew members being killed (Yonkou don't go down without a fight). SO, let me present another idea. The current moment in the story presents a perfect opportunity for Blackbeard to launch an attack on Big Mom's territory and steal her poneglyph. Blackbeard as we saw recently is aware that Big Mom has left her territory to chase Luffy. She is heading to Kaido's territory and probably not alone. It is very likely that she is taking some (not all) of her strongest fighters with her which leaves Tottoland considerably weaker right now. If Blackbeard were to launch an attack on Whole Cake Island with all of his Titanic Captains and fleet not to decimate whats left of it but just for a quick find and grab with the added plus of maybe taking out some of Big Mom's best fighters then it would be a huge win for him. Let's also not forget that Wano is isolated and shrouded in mystery. There will be little to no news coming out from there and if Blackbeard decided to go there worst case scenario is he risks facing two Yonkou. While on the other hand Whole Cake Island has got alot of press lately so information is just there to use and its Queen has left it with along with some of its strongest protectors. So what do you all think. Is Blackbeard going to take advantage of the chaos and attack WCI? Will he join in on the fun on Wano or just wait and watch? Any way it goes the One Piece world only seems to get more interesting.