@Christoph-Hart It looks like somehow I need to insert Parametric Curve Eq module between encoder and decoder because there are only one band filter nodes in scripnode and making full featured EQ in scriptnode is definitely not what I want :)
I have an idea is to split the signal on Mid and Side using decoder + ms_splitter + routing matrix nodes, then insert two Parametric Curve Eqs - one for Mid and one for Sides. And then add another sciptnode with encoder node. Basically I'm making the initial snippet but with scriptnode.
Just want to confirm if that possible with scriptnode and I'm thinking in the right vein.