Blender 2.8. Saturation for EVEE IBL

Please, add Saturation Value!
It will be super handy option for material tune!

As a workaround, add the hdri (a proper one) to the world nodes, use a HueSaturationValue node (or make a custom one if you want to preserve brightness), then just activate scene world in that menu.

yes, i know, but built-in function will be great