There are a few things that should need pointing out...
One. There should be servers with Gold only Auction House, without the Real money auction house.
Seriously, some guy wants to purchase some uber gear, that's great he spends his cash on it and does 150k DPS, but the competition factor is taken out from it...
Two. That leads right into the "Single Player Mode" that leaves out the rest of that bunk stuff.
Three. Refunds for South Koreans who are complaining? Well next time Blizzard shouldn't release it at the same time, maybe next time they'll just hold back South Korea release for 6 months until they made sure they hash out all of the issues with the servers. Seriously, those guys are complaining for their money back and the law that is granted there will just have Blizzard release the game in SK at a later date, so much for "opening day" anticipation. I know anything Blizzard is just the crazy in Korea, but imagine that... a company as big as Blizzard spends tons of money and time into a game, and you slam them for money back for a few hiccups? It's HAPPENED IN ALL OF BLIZZARDs GAMES I've PLAYED back from D1, D2, D3, WoW at release, Warcraft, etc.
You should be lucky there are server problems, I for one enjoy playing co-op, makes the game less monotone.