Great idea. It's a better way of marketing the idea of patrons for each content category. Guilds are also pretty cool. Guilds could eventually counteract the influence of the lords ( whales).
More on guilds here:
https://en.m.wikipedia.org/wiki/Guild
http://epublications.marquette.edu/cgi/viewcontent.cgi?article=1056&context=lnq
Imagine guilds get into the habit of posting at a certain time together so they can capitalize on their guild's membership for upvoting before the bots jump in.