When I first started my PPL training, I was half expecting the Navigation to involve Chart Tables, Sextants, Rulers, Compasses and Protractors, also a good knowledge of trigonometry.... I felt very disappointed when I was told that a modern GA aircraft did not have much room to enable such Astral Navigation with large Charts...
So with these VORs being reduced in numbers, and the lack of ADF beacons, will we be able to open a Chart sufficiently wide enough for us to plot our position using two or three VORs by triangulation, I suspect not.