cl_globallight_shadow_mode currently has 4 levels which map to the in-game shadow setting, 0 being none, 3 being ultra. I'd love to see a new fourth level that increases the global shadow resolution to the next power of two—and maybe even a fifth level? It would make scenes with a long nearz <-> farz distance a lot easier to manage. It wouldn't have to be exposed in the in-game video options menu, just accessible with the console variable