Request: slice output masks

[_Ineffable_]

They are already helpful, but why can I not attach them to a specific slice, like I can do with the input masks?
At the moment One Output mask masks all the Slicess below. That sometimes really creates Headache. Bc sometimes I want to 'Make space' for a layer below the mask, but either if I invert the output mask or not I don't get a good result.
Is it possible to understand what I mean ?

I certainly understand! i really need this too