Something like a ReWire...
Could you combine the MuseScore and SuperCollider or PureData or Impromptu? I mean that in my works I use the algorithms as well as audio programming languages. It would be very useful if one could combine the MuseScore and SuperCollider so that the algorithms, writing in the SuperCollider formed a score in the MuseScore. More MuseScore would have been a cooluniqueamazing program, if there will be implemented live performance control, as in the Notion: http://www.notionmusic.com/products/notion3.html