Ugh. Sorry, but I hate the idea of altcoins on the Network.
First of all, Coins will be able to work because the developers created special conditions for the treatment of that Structured Data
Also, Coins are based on a tangible resource given to the Network - hence the shift from PoW to PoR. Any scheme that bases it on something not directly tied to the Network like that invariably introduces a type of FUDCoin. And a FUDCoin cannot be useful to anyone.
Lastly, what I like to call the M-Pesa phenomenon tends to occur when creating currency-like ability built into something that is not. This is not necessarily the case with your example, but who knows what it would be used for rather than the narrow intended purpose for which it was created. Better to be ready to be extensible than think extensibility would never happen.
I’ve always thought of art as anything that contributes to the culture of a civilization. Works of art - as I’m sure you know @nice - are necessary to strike the balance between a free, yet responsible society. As the content that contributes to the culture of a civilization is inherently valued only in the impact that it has to the consumers thereof (“beauty is in the eye of the beholder”), it’s hard to properly determine the value that the content has on society.
This contribution to society is very precious and has - along with technology - had a great deal of influence in shaping the eras of human history. The ability to have it permanent, unique, and public is spectacular and one of the many things about the Network that I truly adore.