Another scalability thing I have learned with a lot of instruments playing I don't seem to care that the Piano is based on a 50 mb sample because I picked one that cuts through the mix and still runs without crashing. So, if every acceptable instrument loaded is less than 100MB and the system can support GB's of samples
then maybe we can get a DAW using 16-24 tracks of MIDI instruments that don't sound totally fake like they would not.