I've tried the Chalice Rock Depths plan, but it can be very unwieldy, and leads to you cutting out the likes of Swords and DRS that you need to be able to keep up with Tempo decks. Granted, the deck I had played more Living Wishes (a Hoogland build), but it leaves you with a deck that tries to be too cute while you're getting smashed by 3/2 bugs.
At this moment I'm tempted to run Jund or Jund Depths at the GP for the sake of the Punishing Fire package, but I'm worried about heavy graveyard hate if people try to overreact to Treasure Cruise - plus the inconsistencies of those decks. I think Rock has the advantage of using hatebears (Thalia, Teeg) and meta enchantments, along with ETutors to fetch them.
I think if tuned correctly, Rock can have a fine matchup against xUR Delvers and Burn through incorporation of SFM (Skull, Jitte, maybe swords) and main Golgari Charm and be able to easily bring in hate like EPlague, Spirit of the Labia, Chains, and hell maybe even
Equipoise (goodbye Pyro tokens, batterskull token, Sensei's top, angel tokens, phase out TNN) and Seal of Primordium (Counterbalance).
How is the Miracles matchup these days?