New interface to let the plugin tell the host that many instances have a shared state

[abique]

Hi,

In Bitwig Studio we have the ability to sandbox plugins.
Some plugins have a shared state among many instances (u-he Satin, or Fabfilter Pro-Q3).
Sandboxing each plugin instance will break functionality for those plugin.

If the plugin had a way to inform the DAW that it has a shared state between many instances, we could ensure that we put every instances of the same plugin in the same sandbox so they can have their shared state working.

What do you think?

Regards,
Alexandre