This was considered, however the problem lies in detecting what is a macro feint and what isn't. Since it's more than possible to do the things people are apparently doing with macros, just by increasing your sensitivity a load, we have essentially no way of detecting such macros.
It's a pity you don't wish to join, however I'd also like to point out, that the fact that at most three European duelists that I have played against would be suspect of perhaps using macros, doesn't really mean that the entirety of Native dueling is doing so.
10-15 feints per second is in-human and can only be done by mutants, cyborgs, robots and macro feinters. They're quite easy to spot. The hard ones to spot are people like Storm, duellist frequently visiting Ndition, but goes by other names now days. He has done some clever macro feints which looks unnatural due to not moving his mouse, ergo his character animation does not move along with his feints.
Of course they do not attack any quicker then I or you do, however, being a clickblocker(most of the time), it is hard to keep up with 10 feints per second, I get a brain meltdown.
