Straight-in (ILS or VOR Appch)?
Can this be a form of a short-cut?
If cleared do Crossing Altitudes no longer play a role?
Does one have to have the Runway, Approach Lights in sight to request, as I can see no point other wise?
Once Cleared - does one have to remain in VMC or maint. contact with above?
What about aircraft separation and terrain clearance - will ATC still be required to monitor?