It would be great because I don't want to keep going back and forth to where chunks are to be able to see them on the map GUI.

Chunk Loaders currently just grabs the map color from top level blocks in the chunks surrounding the player and displays them on the map.
Showing further away chunks or just chunks at a completely different location would require precomputing the map for all chunks whenever they are loaded, keeping them up to date with changes in those chunks, and synchronizing the maps to the client whenever they need to be displayed.

I feel like this is more work then I would like for Chunk Loaders and also seems like turning Chunk Loaders more into a mapping mod.

I think perhaps integration with existing mapping mods to display loaded chunks would be a better alternative.