This sounds like it could be pretty cool, as long as they aren't impossible to find. I like the idea of "new" figures, and the nods to the vintage line. That being said, like Jesse mentioned, stuff like this attracts scalpers and hoarding in some cases. In a perfect world, where toy lines weren't such secondary money makers for some, it would just be a fun thing to do while you are collecting (finding the chase figures, that is). Unfortunately, it doesn't usually work that way.
I think in the entirety of the TSC line, I only saw one silver "foil" figure at retail. I didn't really care to have any, so it wasn't a big deal, but those were definitely scalper fodder around here. For the TAC collection, the gold coin stuff was a little bit easier to find - but still not in abundance. Like others have said, as long as they aren't super rare and impossible to find, it could be neat. Or, it could be a tremendous headache that drives more people away. Things like this make me think more and more it might be time to cut back to just the Star Wars line starting this fall (at least for the most part), because it is going to take more money and time than I thought with this nifty vintage collection. A lot of neat stuff, but I have a feeling we're going to have to be on our toes to find it all. I'm one that usually just orders a set/case of the "realistic" style stuff anymore, and try my luck at any extras I need at retail or online. That has especially been the case the past couple years, as there really hasn't been a lot of Legacy stuff hitting the pegs here with any regularity.