First of all, you would never want to use 6 vector HUE to fix the color temperature of the shot. This shows basic lack of understanding the theory of color grading.
Second, 6 vectors are there, they just not available, unless one decides to spend $30k for BM panel. This was already covered by Peter.
The list of missing features is long and puzzling. I like the Resolve’s engineering foundation, speed, low price and simplicity, but paucity of most basic tools for color grading prevents me from using Resolve for grading. At least for me, it is very much work in progress, that hopefully some day will hit it’s stride. I just hope, that by then, it will not be too late…