Have you ever used a node based editor? You don't just make a single node. For every edit you do, you make a node. Resize? new node. Adjust RAW settings? new node. Isolate color to make a mask? new node. Apply blur? new node. I just don't know how you can sit there and say that you won't do this thousands of time in a session of image editing and be expected to be taken seriously.
If you can't drag-n-drop the node into a different order, that's also bad. why? It's just one of the advantages of node based editing, and part of that is the ability to quickly disconnect/reconnect/re-order the nodes. That's part of the UX that should be in first public releases. At the end of the day, you can skin something like ImageMagick to have a node based UI/UX and solve the majority of the things you seem to think are important as a first release. If you're releasing a node based image editor, I want to see how the nodes behave.