The new extendend plugins chains in S3 are nice. But they also introduce many limitations when compared to some of the plugin chainers like DDMF Metaplugin, Plogue Bidule, Bluecat Audio Patchwork or Image Line Minihost Modular.
Please extend the functionality of the extended chains so that it becomes a fully featured plugin chainer which allows mutiple in / outs, complex chains with audio / MIDI routing and more.
So this what it is shall look like in case of a multi instrument:
Busses and audio channels shall have similar chains - tailored for the specific type of object.