So I was playing around with the ii V I chord substitution to make a standard chord progression sound more Jazzy. Just an intellectual exercise.
So if I'm going to a major chord the numerals make sense, but if I'm going to a minor chord they don't really make sense.
i.e. the 2nd of a minor key is diminished, and the 1st is of course minor.
So if i took it as read, I'd have to minor a minor (would that be turning it into a major or a Sus2? and then major the minor.
Obviously if I went from C to Am the chord progression would turn into C Bdim E Am.
Just an interesting observation.