This is one of the best and most original feature request ideas I've heard in a long time.

Thanks! I’ll tell my wife. She’ll be pleased to know her non-empegger idea had merit (even if I initially dismissed it out of hand)

Also, it could effectively give us an "Undo" command if we wanted to treat it as such. Really, it's the same thing. A rose by any other name and all that.

Exactly. How many times have I “replaced” instead of "append"ing while building up a very specific playlist?

I'd guess that we're very likely to implement this sooner or later

Excellent. I think it’s so cool that you guys even read these suggestions. The fact that some of them might get implemented just floors me. I only wish that all products were so well supported.