Wasn´t there a render statusbar showing how long time the interactive cycles render to finish it´s samples, just running 2.82 and it´s gone, I remember in some version it should have been there, maybe a preference setting?
And when working with particle hair, isn´t there statistics showing how many main fibers are active, and how many are child fibers and the total amount of fibers and edges? Lightwave has that when working with fiberfx and I would like to have that showing in blender too, and probably match the same amount when doing comparative render testing between Blender and Lightwave.