Fascinating discussion. Mind you, my brain is starting to hurt, but I am learning stuff.

A minor fine point (no pun intended there) without referring to the simplification of illustrating examples with the 'C' scale (and assuming that I am getting a handle on this):

Ionian (what we commonly refer to as the major scale)
Dorian
Phrygian
Lydian
Mixolydian (often called the 'blues scale')
Aeolian (the minor scale)
Lochrian

Also point out that what I and a lot of folks refer to as a 'modal' tune simply means a tune in which chords are neither major nor minor. In this case 'modal' is a descriptive, or even slang term, technically incorrect and really just helps to confuse all the other stuff that's been talked about above! :-)