Visual Feedback of Gain Envelopes

It is only recently that dragging fade in/fadeouts has been represented on the waveform in Sonar. That is, the waveform picture changes to show the new volume.

When are we going to see gain envelopes also show what is happening to the waveform- ala Nuendo or Reason? It makes things a hell of a lot easier.


p.s. I am aware of master buss waveform preview but this is different.