I am going to think your dinner was July 8th, you had me in an alternate reality for a moment.
I will agree and disagre with you, I have been to Delmonico's maybe 20 x in the last 6 years; 15 experiences were great, 3 were just average and 2 were actually bad. I don't know why this inconsistency exists. I now ask for the same server and w/o fail if he is not available, it seems I get a bit more attention due to the fact, I guess, that maybe certain things are noted on the resvervation system-- when I call for a res I do know my dining history is accessed. It is perplexing. Now, if I make a res through Venetian VIP services it is a different story and I try to avoid that because then the waitstaff is falling all over themselves and everytime you turn around, some glass is being filled and I hate that. But I totally know what you mean-- I have observed other tables when I am dining there and "mechanical" really is an apt descriptor.
Did you try Mix yet?