1. Oda's favorite scene is Luffy's (and the group) silhouette on the bonfire in Skypiea.
2. Since the luffy-doflamingo fight, we know there was something sus. Haki can't keep paramecia properties, they need to be previously formed. Example: katakuri does the shape first, puts haki on them later...
Errr, aren't DFs originating on the Grand Line exclusively? A lowlife pirate who never set foot in the GrandLine possibly never saw one in action. People like Buggy got his because they were in the Grand Line as apprentices. Luffy got his thanks to Shanks crew.
And pretty positive Blackbeard is...
