Theatrical Sound: Trigger, Loop, Mix, and Playback App (Max Patch)

If anyone has a Max Patch used for theatrical sound design and music playback they would be willing to share please let me know. I'm looking to build something custom for my needs but also want to look at what others have come up with. Not only are the solutions to the problems important to me but also knowing more about what others have worked through. Maybe issues or ideas I haven't yet considered.

Here's a basis feature set that I have in mind:

1. ability to stream multiple audio files with preset fade and volume automation that can be edited later.

2. ability to set playing files as loop, repeat, infinite loop etc...

3. ability to assign output of audio to any stereo output of audio interface

4. assign midi controller on/off to a controller such as the novation launchpad pro or similar

5. patch should be able to handle between 64+ individual one off/audio loops/triggers - to utilize an 8x8 grid

6. thinking of a simplified but custom implementation of what you see with the app http://figure53.com/qlab/

If anyone is interested in contributing and collaborating please get in touch.

Thanks!