i'd like to see this developed even further. I'd also like to see a 'remove all instances of this plugin' and a 'bypass all instances of this plugin'.
How it works, lets say i'm using a third party plugin as a virtual preamp on every audio track it would be great to open the GUI of any of the instances of the preamp plugin and select either the bypass option (as a way to A/B) or hit remove if i don't want them in the Song.