To make sets of triangle objects for the shader scene using an input of 3D point lists and RGBA (4D points) list for vertex colours. Like the Kineme patch of same name in GLTools.
I guess seeing as we only have lists of similar types, there would need to be ports for points and for colours. Either three ports for each point, or one like Kineme patch that uses first three points in a list for first triangle etc etc. Same for vertex colours I suppose.
Quads while we're at it perhaps if it would be just a minor tweet to the code to make an extra patch. I'm going to have a go at making a triangle set co-ordinate generating patch to feed the data to something like this, or loop on the single Triangle patch.