Again I think that would potentially knockout a huge portion of competitors. A rule like that can't be written clearly for all situations and is still wide open for interpretation unless further defined. Good drivers with broken machines could be allowed whilst dodgy drivers with functional drive would get weeded out, which is silly. Also, it'd have to be applied mid-fight every time a robot seems to not have fine control, which by nature would cause disputes however honest the judges' decisions. Too subjective.

Kind of off topic from the OP but yeah. Stopping the moment there's fire just seems like a good idea, and I'm fine with the concept of proving movement after a fight, just think the figure 8 is OTT.