My comments:
I like the structure, but am concerned about the separation of consumption and patronage. Our society has become far more consumerist since Victorian times and ignoring that cultural shift could be problematic. I propose fortifying crowdfunded patronage with a matching fund that would match crowd patronage dollars.
In college I was cheap and pirated music. Now I care more for convenience than a few dollars and so download my music via iTunes, where cover art, filing, and synchronising is taken care of. I suggest adding an optional (or maybe not) extra $1 (or whatever) to be directed into a matching fund. This fund would then match, at a ratio to be determined after further thought (would probably be a moving scale), crowd patronage dollars to artists. Thus, the consumption and patronage are joined somewhat.
One could still have free music for those who value dollars more than time. The downside is the iTunes of this analogy would be a power centre. That said, it would be naive to assume any such system wouldn't concentrate power. It might be good to have an iTunes figure opposing the Kickstarter one.