2D: without lateral guidance
Haha, thanks for catching that. Fixed.
Life may end up being simpler with the new classification -- in the future. It's just that we're in transition now, so things seem complex since we have to live with the old and the new.
E.g., today we have so many types of approach procedures because they are based on the equipment required (NDB, Lctr, VOR, VOR/DME, ILS, LOC, MLS, GPS, GLS, RNP, etc., etc.) This situation will only get worse as new technologies come online.
In the future, we may end up with just three standardized approach procedures (NPA, APV, PA). That's it. Most aircraft will have GPS/RNAV and most airports will have at least one 3D approach.
From a pilot's perspective, all we care about if we're going to fly 2D or 3D. The FMS can automagically select the most appropriate approach technology & calculate the relevant minimums based on equipment available.
Simple. Maybe? Depends on how the transition goes, I guess.