I'd be for a universal gbi -- if it's built on blockchain, w/ tax system builtin via transaction fee, perhaps it's tied to an identity coin, and each identity has a 'score' on how unique that person 'appears' to the algorithm, and using a combination of biometrics (like iris scan), and social graph. The more 'unique' or seemlingly unique/trusted the person is as an individual the less transaction fee they pay per transaction.

Something like this could then be adopted as a global currency and have gbi paid out to all members monthly. Perhaps we could create a not-for-profit corp that creates small businesses where 100% of left over income goes back to consumers who use the store (think grocery) and workers who work in the store as a bonus.