Glad the deck's been working out so well for you!
I threw in the
Seasons Past +
Dark Petition combo because I was impressed with the
Seasons Past control deck that Jon Finkel brought to the Pro Tour. In retrospect, that might've been a mistake.
Anyway, Eldritch Moon is set to give us some powerful new
Delirium cards that demand space in the deck.
Gnarlwood Dryad and Whispers of Emrakul both look pretty awesome. Grapple with the Past might be worth a try too. And we haven't seen the whole set yet, so who knows what else is in there.
Second Harvest is a decent card, but in this deck I'd much rather have one of the new offerings from EMN.