I purchased about a dozen of these in order to get the cereal and Pez ones. Didn't have a great amount of luck, but did have a good time opening them. Bought the ones I wanted, and didn't get, off ebay and sold off my extras. Wasn't a moneymaker at all, just the opposite, but I do think these items are very impressive versions of the products themselves. I wish there weren't so many levels of rarity and I liked more of the products themselves than maybe half a dozen, but it was a fun little collectible experience.
And I did think about pairing some of the Retro Minis with the Wacky Minis, but I don't think there were too many that lined up. Plus, I thought it might be strange to have a few "real" products among my display of Wacky Minis.
I'd be all in for a Kickstarter Wacky Minis series 4! Can't imagine it'd happen, but I'd be down for it.