With schismata you can have;
Changing the number of tones per octave or changing the number of beats per bar does not alter the notes you have already created. So it is is easy to write poly-rythmic or poly-temperamental music.
A large composition is fully defined by relatively small schismata file and can therefore be easily emailed to a friend who can play back the file with the identical sound you created. Any instrument you design can also easily be shared.