These spawns need to be RANDOMIZED.
I know that several of the top guilds have programmed their bots to tell their guildies where to be 30 minutes ahead of time.
With instances that fill up at only a measly 50 people, this is just absurd. Almost every instance is full long before the average player can get there, meaning the big guilds are getting 5-6 kills an hour while the avg player is managing 1-2.