I *think* part of the problem you are running into is that you correctly want to brighten the violet, and darken the blues, but you are darkening the blues by darkening all that is super-saturated, which contradicts what you are doing to the violet. Might need to re-think the workflow. I wish I had experience with Premier, as you seem to be on the right track, but I can't provide any constructive feedback.
-G