I would like an authentic vanilla experience... BUT.
this would mean an emulation of also the population of the time.
the average server population in vanilla was probably at most 2000 players online. and this was with 40 servers at launch, 40 more later and even more further down the line.
I highly doubt blizzard will provide 40+ servers for the launch of classic. and even if they did. We can expect well over 1,000,000 people to play at launch. but lets assume its only going to be 1 mill. at 40 servers that is 25 THOUSAND people per server if everyone was evenly spread. this is 10 times to server cap for vanilla servers.
So the question is.. to support an "authentic" vanilla experience. what should blizzard do?
should they incorporate phasing to split people up into their own versions of a zone when there are too many present?
should they have dynamic spawn rates for mobs/quest items/nodes?
If you suggest that they should do nothing because changes mean "its not vanilla".. then you are wrong.. because 25,000 players is not vanilla, 2000ish is.