Alright, this is what I'm running post-rotation. Already have most the cards that aren't from RtR, and some that are (Overgrown Tombs).
I'm not sure about Rancor here. I might remove it completely, move the 4x Grisly Salvage to the mainboard and then sideboard 4x Farseek or maybe a few Arbor Elf.
http://tappedout.net/mtg-decks/bg-zombies-15-09-12-1/