Layer mask "preview"

Hi,

I use a lot of layers (with masks) in my images when processed in Capture One and I (usually) name the layers so I know later what the layer is all about. However, I would like to request a feature similar to what is  available in LR: It would be great if we could see the thumbnail of the mask of any given layer by hovering over the name of the layer.

Thanks for looking into my request.

Best,

Mark