I use brand colours that have specific colour values in CMYK and RGB. When I create a design in RGB and then have to convert it to CMYK for print I have to import the CMYK swatches after changing the document colour mode to CMYK and then globally replace all the colours. I would like it if when you define a swatch you can have an option to give it an RGB value for RGB mode and a CMYK value for CMYK mode. Then you could switch between colour modes without having to deal with new swatches and colour replacement. I'm sure this could work and it would be a game-changer for me to only have to deal with one set of dual-value colour swatches for each client/brand.