I think, when we classify things as 'good' and 'bad', we are already getting caught in the problem! Labels are useful for practical purposes but problems crop up as labels almost instantaneously cross the boundary and become emotional labels as well. When we classify things emotionally as 'good' and 'bad', then there is no way we can be at equipoise with both of them. Because, by definition we desire the 'good' and abhor the 'bad'. So, in the case where 'good' and 'bad' are emotional labels, a more precise translation of Samadrṣti would be 'not really caring for both good and bad'.
Of course, when we use the labels purely for practical purposes, Samadrṣti can be translated without loss of meaning as maintaining equipoise with good and bad.