Mulligans
Baleful Banker + Elise the Trailblazer combo will give you +5 cards in deck and +15 good cards in your hand. That will be much useful in control vs. control matchups. Also, this combo is good thing against Azari, after warlock will play him.
Novice Engineer is better than Raven Familiar because it guaranteed draw card.
Skulking Geist is still in the deck because of Taunt Druid, Cube Warlock and other not that nice decks.
Mindbreaker is good thing against Baku the Mooneater or Genn Greymane decks.