Who wants longer shadow distance? Raytraced shadows are gorgeous, but it’s really awkward to not see shadows on players across the street in Dalaran. Out comps can handle it. Also ground clutter and objects distance could easily be extended unless someone hardcoded an integer in the Engine.
PS: I know there are threads in Classic forum and in US, but I don’t have a char there to post there.
You used to be able to do this with a macro, it made places like Nagrand super dense with grass as far as the eye could see cus you could go several times past the max limit the options menu let you do, but I think they’ve disabled it.