Where's all the Eldrazi Ramp?

As far as I know, Eldrazi Ramp works pretty well against both Energy and Murktide. Yet over the last few days, I think I've only seen one or two top 8 a challenge. There was a Tron list that won yesterday, but it isn't the ramp one with Emrakul.

Where'd all these decks go? Is it just a flavor of the week scenario or did someone figure out it wasn't that good?