I really Love AP and AD both Programs are very easy to understand.AD gave me the intresst in Vector Design back,i was always on a war with Illustrator and never tried to work with, because it was too complicated for me.
I have a Idea/suggestion for AP:
HSL Sliders in RAW Develop Persona
I have a Program called Photodirector 5 ,this Program have a splitted Menu for 3 things: Tone /Saturation / Brightness you can adjust colors just by this.I know AP have his own HSL Sliders,but a bit more defined,when just 2 oder 3 colores need some correction.And i like to do this stuff right on RAW File.Lightroom have a similar Function for this.I added a screenshot what i me.