This is the initial build of a comfyui minimap. Very simple so far. It makes a copy of the workflow graph, simplified and minified, in the bottom left hand corner. It puts a red border where your viewport is. Left click on the minimap and it will move your viewport to that location.
https://github.com/OliverCrosby/Comfyui-Minimap
git clone https://github.com/OliverCrosby/Comfyui-Minimap
comfy node install comfyui-minimap