Not sure what I’m suggesting there but I thought I’d post my thoughts and see what additions others can make.
More and more LED controller work best with a 0 - 10V input or PWM input. I currently have one in our master bath. This light was added (years) after the switch wiring was complete. The LED controller will work when dimmed from a high quality dimmer, but there is a delay starting, the low minimum light condition is limited as well as the Max light.
I know the NEC code frowns on having high voltage (120 vac) and low voltage (0 - 10) in the same box. However there may be a loophole I’m not aware of.
So I don’t know what practical device would fit this need nor how much of a market it will be. But I thought I would throw it out here as perhaps it might be the seed for a new device.
Could direct association from a Red dimmer (some newer firmware or ??) be made to associate to a device like the Fibaro RGBW dimmer? Might be a option.