I can definitely see that over-exposure of an artists work can lead to diminishing returns. And there is a point at which releasing things really is overkill — I believe there’s a bootleg somewhere where all the individual tracks of one of the songs off Jill Jones’ album are presented separately — is it “G-Spot”?
And we probably don’t need to hear each of the several different versions of “Turn It Up” that are circulating.
But I do think that there is a case for a comprehensive set of Prince’s music — the released music, and its close associates — representative live releases that complement this, and the unreleased tracks — to create a “complete” representation of Prince’s life and work, valuable in its own right, and as a cultural and historical document.
Hendrix was not done justice in the manner in which his recordings were treated after his death — as I understand it, because the music itself was not centrally owned and managed — lots of people had the material and the means to put out different recordings of variable quality. Things have improved now the Hendrix family has complete control of the estate and it’s assets.
I’d look to the model of The Beatles — where the music has been carefully preserved, curated, packaged and released over time — creating a full sense of their work, without diluting their brand.
Since Prince owned his own material, and carefully retained his recordings, there should be a very good shot of presenting his work in a similar fashion.