I really like the goblin theme. Skirk prospector is probably the best sac out in standard but I think you might want to use it to ramp into Bontu or Liliana early to close out.
Sam Black talked about the archetype on a recent podcast (ProPoints) in relation to the new card Hunted Witness maybe giving the deck new legs since it now has more redundant pieces. His list looks very similar to the one you posted izzetmage, here was his rough list:
There was also a quick mention about making it a hybrid of humans with champion of the parish and thalia's lieutenant to give the deck a way to win w/o the graveyard.
You got me, all the pros are secretly holding their Journey tech for this set because it was just too good.
4x hunted witness
4x viscera seer
4x stitcher's supplier
4x cartel aristocrat
4x blood artist
4x zulaport cutthroat
4x rally the ancestors
2x return to the ranks
This looks like the core, so you can fill in the rest with cards you like such as Path to Exile, Lingering Souls, or Tidehollow Sculler.
He also talked about taking the deck a couple extra ways, like adding blue for Jace, Vryn's Prodigy, Minister of Inquiries, or Hedron Crab to get some more self-mill.
There was also a quick mention about making it a hybrid of humans with champion of the parish and thalia's lieutenant to give the deck a way to win w/o the graveyard.
Here is the link to the podcast where he talked about it (starts at 1:45): https://soundcloud.com/propoints/guilds-of-ravnica-preview-card-and-set-discussion-part-1-ep-13