Yes, I was on twitch a few weeks back , and came across someone running 40man MC on a private server. They essentially cloned whatever files from then, or however it is done, and so it was literally like going back in time, and watching a replay from back in 2005. I also talked to a Best Buy employee for a while about how he played WoW and ran a private server where he could do anything. It is possible to code it so your raid is running through MC as 40 Ragnoroses, fighting 50 gnomes and goblins.