The way the Preset Amount slider currently works is that I select one of my presets and select amount of that preset to be applied. This changes the scalable values on the right side (Basic, Tone Curve and so on). However, when I make the changes to that preset (which happens a lot as I copy between images and I need to either adjust WB, hue or saturation of certain colors, etc.) the Preset Amount slider greyes out. I would have to save the adjusted preset as a new preset and apply the amount again which is time consuming when I need to edit hundreds of photos.
The idea here is that Preset Amount slider would not be disabled after changes are being made to preset. It should stay enabled all the time so scalable values can be adjusted on the fly or there should be new slider introduced for the right side edits only (something like Overal Adjustments Amount or something similar).