@Captain-M I don't think the disappointing amount of lore in Wano is one of it's main faults, but I don't think it's a criticism without merit either.
In Zou, Oden's death was presented to us as a result of him travelling to Laugh Tale and learning the true history, but that had nothing to with it at all.
In fact, what Kinemon says in Zou really doesn't make much sense at all in hindsight. How would Kinemon know that Kaido was trying to pry information out of them, when that's something Kaido only started to care about after Oden's death?
Then there's the Kozuki clan being the stonemasons who created the poneglyphs, was this brought up at all in Wano? If it was, definitely nothing of value was added to it.
Also, we currently have 4 unread Poneglyphs with us, 2 from Big Mom, 1 in Sukiyaki's room and 1 Law found in Onigashima (assuming he told Robin it). Obviously we didn't learn the Alabasta poneglyph was pointing to Wano until we got there, didn't know the Skypiea poneglyph was pointing to Fishman Island until we got there, but couldn't we at least have acknowledged the fact that we have all those poneglyphs at the end of Wano?