I dont think it matters much what you try and do - if it looks like you are multiboxing and players report you for it, Blizzard is just gonna ban you anyway. I see this as a way for them to ban multiboxers without needing to investigate if they're actually breaking any rules. If it looks like a duck and quacks like a duck... I'm not saying its okay, but this will let them blanket ban anyone who gets reported for multibox. All they have to do is check if you are controlling multiple characters to see if the report is accurate.

I think its because they havent been able to ban these multiboxing bots properly. They cant detect the bot (apparantly), but they can detect if you are running multiple characters by the help of player reports. I mean it doesnt really go unnoticed when 5+ characters are running around in the world, and thats what they are betting on to combat the bots.