I've been of the opinion that Takahiro was paying attention to fan feedback and actively tailoring the story to add greater and greater mountains of salt to his readerbase.>Tatsumi dies in anime
He gets dragonified and his life is saved through the most asspull-y series of events conceivable.>Honest pulls a single-shot Teigu destroying ring out of his ass so Leone gets killed.
His crown is the Teigu and it was buffed so it can destroy a single Teigu a week without any specified limitation.
After the anime, I remember people saying that they wanted a somewhat better ending for Tastsumi and Takahiro managed to pervert that by giving the readers what they wanted in the least satisfying way possible. Except for Wave protecting Kurome's smile