I'm a clarinettist - we are not supposed to do chords, so please forgive me if these are idiot questions ....
1. the superscript modifier 6/9 is (from a google search) equivalent to 'add6 add9'. Yet lily puts it into the score as '6 add9' which is surely not the same thing at all ?
2. the 'sus' modifier should be followed by '2' or '4' and if lily finds sus on its own it just puts out the basic triad. But some scores include all three forms - triad, sus and sus4 implying that they are different. Shouldn't the unmodified sus generate just the first and fifth ? (specifying ^3 also seems to generate the full triad).