Sometimes you define the levels and while working you decide for better slab positioning. If i want to move my original floor reference level to adjust to the new slabs it creates an asbolute mess. So i would like to have the OPTION to relocate a reference floor level WITHOUT moving its asociated objects. Of course, once the new level is set, the objects become associated with it.
Ok. Now it makes sense. Not a big issue for me as I always avoid multiple levels in a single story for accessibility matter. But yes. Your suggestion is perhaps not essential, but also needed. So in my experience I vote Average.
Thanks for your explanation jl_tl.