The RPC had me thinking, why not have a python scripting bridge in node network? A node which allows scripting and could create primitive outputs, or output images.
For example, AI is all the rage I am a developer in the scene. I want to come back to Terragen but don't have much time. But if I had a bridge here, i could create HDRI with a LoRA and output all within Terragen and use in a skybox. Or generate textures and depth and normals and output in workflow. If I don't like it, I can generate a new one which is fed downstream immediately, no searching PC looking and images. Maybe the outputs could be cached project assets and use that asset in place of the nodes python being ran (in a new session).
Brainstorming. Had a few beers. Love Terragen still deep in my heart.