With the current number system, in minor keys, the minor chord is considered as the 1st degree (in the key of A minor, the chord A minor is the number 1), which makes sense in my opinion
However, in the country where I live (where they use extensively the number notation), they consider the A minor as the relative of C major. So in a key of A minor, they would use the number 6 for the A minor chord instead. So could it be possible to have both systems? (in order to share charts with those people)