I don't think we need everyone on the one server and if they are slightly different, where is the issue?
You did absolutly amazing work and it feels total like I remember it and I don't mind the bugs that are happening, it is part of the game.
Even retail had dupe exploits etc, still it worked out fine.
Please go ahead and make it multiple servers

You guys can manage that, I am sure there will be ways to find gm's etc and it is better then trying to play around respawnrate etc. Cause at some places the respawn is already high, in others there is no at all (feeled).
Also, if you can give us an englisch paypal link I will look if I can spare some money! Thanks for the great project.