Sets of people I'm a fan of

I think it would be great to be able to add people I'm a fan of to my sets, instead of just friends. Now that Pownce is no longer invite-only and the number of people I follow increases, I'm having a harder time keeping up with the notes I receive. Right now I can use the "show" drop-down to filter by set, but it leaves out public notes by people I follow who aren't my friends.

For example, I could create a "Pownce" set, add Leah, Daniel, et al. to it even though they're not my friends :(, and use the "show" drop-down to see only their notes. I think it would be a great way to sort through the noise and keep track of notes by my favorite people or the ones I find most-interesting.