And my kids had friends who knew the tricks to score higher on the old SAT W. (Because certain structural devices overrode content, I asked about mechanical scoring, above, because I know first-hand that they tested this for the GRE.)
I think trying to replace untimed writing with another std test format is trying to drive a square peg into a round hole. You’re trying to make a centralized scoring service replace the individual qualitative writing reviewing by adcoms for that college. Again, trying imagine scores as supreme. It misses the point.