Ah the L-C-R propaganda again! My feable ears recently pretend:
I deal with a lot of vocals and choirs and find that L-C-R doesn't work for mixing mulitple vocals that well.
My radio vox sits well about 30 LT.
With stacked choir vocs, they oft spread well (for me) when panned sensitively BY EAR ...
Some vocs and instruments do well to constructively interfere near each other in the panorama ... or off by 10-20 LT or RT.
I will say, I don't have much going on at 65 LT or RT.
L-C-R does well for my beats and hip-hop attempts ... where rhythms must be clear and not merge (constructively nor destructively)
And yes, L-C-R is an awesome creation ... baptizing the ears so to speak.
Recently I've applied some Lexicon plate verb with 50msec pre-delay on Haas'd vocal tracks ... strait down the center. (Traditionally, we're not supposed to do that). With L-C-R logic ...
Sometimes, the Phantom Center receives Haas-delayed plate-verb'd vocs quite well with a peculiar majestic command presence. (If that makes sense)