I also think that light should have Kelvin temperature in the light properties without opening node editor and add the non-intuitive “Blackbody” node.
Something like ue4 with a checkbox “Use temperature” instead of color that change the color input to a kelvin slider.
Or a dropdown or button-bar-select instead of checkbox for coherence with the rest of blender.
https://blender.community/c/rightclickselect is the proper place to propose feature requests. Please do so, as it will get more attention there.