After working with the GPO studio 1.2 beta, here are a couple of suggestions for enhancement:
1) Record to File window: Add a checkbox that allows this window to be changed to an "always on top" window. This will make it much easier to use within other applications (sequencers, etc).
2) Master Volume Control. Philisophically speaking, everything oughta have one. Practically speaking, I do a lot of my work with headphones plugged into my laptop. When working on quiet sections, I can't get enough volume for a comfortable listening level without going into the individual players and cranking up instrument volumes. This is one of my complaints with Kontakt player as well -- needs a master volume adjust.