Interesting concept Chris.
I’m sure you could build it today if you had time to spend. The wwise and perforce connection ought to be how to be used together with Msp max or the open source alternative.
Your concept as shown above for sure wouldn’t be for me, but I could fully see the usage for some.
But then otoh you are trying to push a node based system onto a timeline. It’s sounds like a less than optimal concept.
If you look at Nuke VFX software it does not at all try to be a linear video editing software. The two different concepts don’t match that well. But then otoh you touch a few brilliant conceptual ideas IMHO.
Clip packages. If clippackages could easily be opened, edited, duplicated etc then you could use a totally different workflow slightly similar to the setup you explained but within the context and User experience of what nuendo already is. And clip packages do contain automation and inserts. It depends on how you “recall” them.
But they do not contain groups and fx channels and would need to do that for this to happen.