VOR/DME REQUIRED WITHIN AN AIRPORT?
 

In many major airports, I always find a VOR/DME within it, but since we could fly the advanced approach(ex. rnav, gps, gnss), is the V/D still required??? Or only for homing
For the conventional on-board navigation facility, using the V/D around the airport(10 nm away) to construct the arrival then intecept the final for ILS seems feasible....

In the UK, very few airports have an on airport VOR/DME, but many have an NDB sometimes with DME.
Many countries do not allow precision approach procedures using the systems you mention, so some means of homing to establish on an ILS is required in the event of radar failure.

The airfield at which I work is planning to dispose of the VOR, though not sure when. There will still be an NDB.