[frankus]

I think I speak for most people when I say I want my music "discovery" playlist to be something like "mostly stuff that sounds like stuff I've indicated that I like" with a small amount of "not sure I'll like it, but suprise me". It sounds like OP is looking for the ability to turn up the "surprise me" factor at the expense of maybe having to skip a few more songs that just aren't clicking with them. So maybe something like a "temperature" knob is in order?

[joe_the_user]

You're welcome to your preferences but I think you need evidence to claim you "speak for most people".

[boldlybold]

I think it's an accurate statement. I've heard similar sentiment from friends in the car with spotify on.

[JeremyNT]

YouTube music actually has the ability to set how this works with its "radio" feature.

You can set the seed artists, then select levels for "artist variety" and "music discovery." You can also filter based on tags.