I'm still hesitating. I like some of the sets, but there are not a heap of "bonus" stuff, and I may be better off getting the gold coin option. At that point I might as well simply wait for normal production. I get behind Kickstarters for two reasons: 1) small fledgling company trying to launch a product, 2) free bonus materials.
They're not struggling on the project at the moment, so I may simply wait for retail availability. Really liking some of the individual pieces they're coming out with.