So be it. I if given the option would never play on server 2 due to the fact it just would not be real for me or seem cheaty.
I would play with 5 visible people and thousands of npcs before playing with thousands of visible/invisible players mixed with npcs.
edit - I may never see a single player ever in years of playing but I will never feel the need to call Ghost Hunters.
Okay, now excuse me because I cannot follow your logic in any way. What difference does it make whether some players are in a Solo/Private Group on the same server, and how many are on an entirely different server? And as for your last remark, you do realize that due to how instancing works, there can at any time be a separate instance of the very area you are in, with players doing stuff there but you cannot see or interact with them?