Currently game is unplayable due to massive number of ppl on a single server. Doing 1 quest that would normally take me 5 minutes takes more than 15-30 here(try undead start zone) and this will only get worse when the word about this server spreads out.
There is a massive amount of ppl that played vanilla and want to experience "the glory days" again. When they find out about a realm that has no pay to win, almost 100% blizzlike realm, where everything will eventually work as it was on retail, they will all come here. 6k ppl online on 1 realm is way to much(not even blizzard servers like outland have that many ppl. One realm is simply not enough atm. Imagine what will happen when this server gets popular and ppl start rushing in.
PvE only realm is a must. I ve played so much pvp on retail and im sick of it and im pretty sure that lots of ppl share my opinion. I am convinced that 90% of ppl dont give a crap about world pvp while leveling and it is only one big PITA. If you want to be 100% blizzlike u NEED PVE REALM.
I don't think there is any server that gives a tiny bit of what Nostalrius offers and this server has potential to grow a LOT. My only advice to you would be to be prepared and to fix bugs quickly. Thats if you want to be a "quality" server as you advertise it, otherwise you will have the same rep as shitty molten that every1 with a tiny bit of working brain will go away from.