Oda admitted in his recent interview he included his ideas for a robot based/sci-fi type manga into One Piece now as I suspected. He had plans for it many years ago, to make it after OP was over, this was pre TS easily I believe? Maybe early 2000s? It sounded like he wanted to do his own Gundam type series IIRC but hes showing a lot of inspiration from Tengen Toppa Gurenn Lagann with Franky especially too.
I wouldn't be surprised if he wanted to do some Seven Samurai period drama and thus his own take on Rurouni Kenshin as a seperate series too but he's compensating for it with Wano too?
Or that was his plan for Wano all along anyway?
It's not even funny how vastly superior Rurouni Kenshin is to Wano and that even Gintama is much better than Wano and its a gag/satire series for the most part!
I know I've got the controversial opinion/hot takes as usual again lol.