COLOURED pipelines would help so much. Some kind of grouping system would be nice perhaps, but colours would be great.
Macro Pipes - Like subpatches in max/msp. A .mhp within a single pipe object.
Scales - Ability to select scale by midi mapped parameter. Also please include the standard medieval modes - dorian,phrygian,mixolydian,etc. Failing that allow user-defined scales to be added to the midi mappable list.