I would like to see a cc messages Automation feature connected to the Audio Player so that for instance my kbd patches change and my guitarists line pod patches change and vocal effects change in parts like chorus , Verses and so on when playing live using hardware based gear. This could be achieved via a midi strip below the MP3 or Wav file alllowing midi info to be accessed via cc and painted or marker points been placed on the midi strip.
Rather than having to manually change parts in the current set up you have.
The important part is Automation so these changes come to affect at marked points of the wav or mp3 file via the midi strip or the Automation cc strip.
I think this would go a long way in making gig performer unbeatable.