RNAV procedures are a game-changer because they really require proper use of automatics in order to be flown to the required tolerances. Drift one mile off on some procedures and you will generate a nasty-gram from ATC. Half a mile off on some approaches will set off the EGPWS. Either way, details could be in the Chief Pilot's office before you land. Some approaches also require VNAV coupling.
However, good airmanship: suggest that all possible ground-based navaids are on display as a back-up and to assist in orientation.