Script to sample a real synth?

Hi,
while reading all in the forum, I miss a simple function to create a new sampleset by automatically sample a real midi-instrument. I think it is not a lot needed.
In a loop, the system could create a MIDI-Note and sample this tone created by the MIDI-Equipment and save this wave-file with the right name and notenumber, - and probably the volicity. An USB-Keyboard and a Display would be helpful to create the names but it could work with defaults too.

While using Google, I found some hints that Apple Mainstage provides a plugin which does partly a job like this.

Is someone able to develop this addon or extra script?