We desperately need to be able to set the support gap by an actual measure, such as 0.24mm and independent of layer height, rather than just by the current layer height.
If you run a layer height such as 0.16mm then supports will mostly "weld" to the model and be near impossible to remove.
If you use a layer height of 0.12mm and set support gap at "2" then your gap might be a little big depending on material and model.
Why this has not been already implemented makes no sense since most all other slicers do this.