Macros are soooo easily spotted, when you see someone feints 6/7 times (sometimes even like 15 feints in 4 seconds
) in a row at crazy speed (impossible to do with mouse, just look at the difference between mouse AND macro feinting in the video above) and always doing the same 2/3 combos: you have a macro user.
Some really good players on EU_3 did it very often and the only thing you had to do to beat them was combo-break and if they were too used to people being on the defense while they feinted like monsters you could wreck their shit.
If there is a way to detect them, I would be glad to have them banned.
If not, just deal with them accordingly (hate + spam).