What benefits does an NPCServer bring?
Honestly, I used to play almost exclusively on Classic just because NPCServer lags for me. At least on Classic the only real lag had to do with your connection and other players, whereas now even on 256k DSL I'm lagging. I go to open a door and it takes upwards of 10 seconds for it to "open".
I find NPCServer to be nothing but horrible
EDIT - There is the bonus that Classic may be worked on now. If that's the case, can we expect a new overworld or will it be developed to be just as ugly as it used to be?