[lumin]

I think the bottom line is this about the Classic EQ argument:

Back in 1999 the developers of EQ were going for a very hardcore world to play in. Chatting was mostly local, corpse runs were often, grouping was required and grinding was very heavy.

Removing Global OOC supports the original dev team's intention of a hardcore world. If everyone had access to multiple computers back in 1999 to 2-box, I am 99.9% positive the devs would have outlawed it as well, since it clearly steers the game away from its original intention of requiring players to be social and work together to win. Multi-boxing removes the necessity to play together and collaborate to succeed.