E.Swarms are the new king of anti-meta. For those who don't want to play Spellbooks or E-dragons (Dragon Rulers), they'll play this deck.
In order this deck to be competitive you need to protect Ophion. Ophion is the main reason this deck is good - it locks almost all other tier 1 decks. Cards like F.Dress and XYZ reborn are a must. Other cards that you need to main are - IIW (Iron Wall) and EEV (Eradicator).
I don't see BTH as a "good card" anymore. Cards like Compulse, Fiendish and Breakthrough Skill could be at greater use to the deck.
Almost all of your side deck is bad. Extra deck needs a touch here and there. Both are more player preference things, so I won't really get into that.