Dump Lumetri and add a proper grading workspace like daVinci
Lumetri is basic and a pretty poor CC. You must try and develop a grading environment with profession level operations and a more logical interface. Lumetri is a plug in tack on.
Joe D commented
I think you’d just be better off moving to Davinci Resolve. Adobe seems to have zero plan to fix this program. But if it helps you feel any better, Davinci is everything premiere should be. So at least be excited about that!