Nintendo probably requested and received countless feedback on both the GamePad and Pro Controller. Judging by the changes made to the analog sticks, button placement (namely the offset buttons/D-Pad and relocated Start/Select), and grips, they've most likely listened to that feedback. Nintendo probably asked each and every one of those companies, "Do you really need analog shoulder buttons?" I'm not completely defending their absence. Parity is the obvious counterpoint (and even the Gamecube had them). Potential future use is another thus it's better to have than have not. However, it's not hard to see why analog shoulder buttons/triggers were deemed unnecessary. Just out of curiosity, were any games affected when Nintendo removed analog from L/R in the Classic Controller Pro?
I always liked the feel of the digital click and felt it went severely underused. Oh well. I'll miss it.