Do the current or future Capture One video tutorials cover the detail of making adjustments using the color wheel, especially when concerning skin tone?
Yes, absolutely!
C1 has a unique and powerful tool for dealing with skin tone adjustments (Uniformity tool within Adjustment layers) which will be of special interest to portrait, fashion and wedding photographers. Actually most of us need a little skin tone 'help' in portraits!
In Video #22 of the tutorial, David Grover deals specifically with this tool and other skin adjustment techniques to ably demonstrate the de-emphasis of 'less desirable' skin tones in a fashion shot.