Why not list the pros/cons of each method and let the candidates choose their poison. Whichever metric they think they would be best at given their constraints.
Still requires work and a subjective estimation of candidate skill because you have to make a judgment across metrics instead of within one, but I mean, everybody wins in this case, right?
Still requires work and a subjective estimation of candidate skill because you have to make a judgment across metrics instead of within one, but I mean, everybody wins in this case, right?