Yeah, having typed those out I see how I came up with them both as variations on this one core idea that really interests me- the idea of having been "great" and then realizing that you don't want any part of that greatness because it's actually pretty restrictive and damaging. (Maybe a little autobiographical haha)
I think the difference being: The Heir would have a kind of "I don't want to perpetuate power and yet I'm afraid I'm so molded by it that I will anyway" deal that the Virtuoso wouldn't. And then the Virtuoso would have a deal of "music for me was all bound up in pressure and expectations and a conditional kind of validation, and so I kind of hated it. But now that I'm running from those expectations I'm asking myself whether I actually do love music when it's something I genuinely do for myself." Which the Heir doesn't really have, in my mind.
Granted, maybe trying to make all the stuff I described a core part of the playbook might actually limit the playbook too much. It might be better to allow those interpretations to be one possible use of the playbook, but not try to make it so you have to play the characters exactly in those ways.
Also having said that, I'm not even working on either of those right now, I'm working on some natures. But I'm excited to see what Eric D comes up with, and how it relates and differs from the stuff I was thinking!