I voted for your gradient filter request. The issue here is that the original poster @mandarin Michael Clift was struggling to recolour his skies. My post was to show him how to do so with the existing U-point local adjustment tools. There’s no urgent need for tool improvement here to be able to effectively and efficiently recolour skies or water.
I think we’re all getting a bit spoiled here and losing sight of the end goal - a great RAW developer which works fast and efficiently. It’s absurd to expect DxO to bring most of Photoshop into PhotoLab and still maintain reasonable performance (make sure to read @Garret’s post a little lower as well).