Node Group Mapper (Easier and faster way to navigate multiple stacks/layers of node groups)

Hello guys. I would like to propose a feature that would make navigating node group stacks much easier and faster.

This would help the users to be more interested in procedural projects by making the shading environment much friendlier even to beginners.

There are two ways of dealing these things. First is the layer hierarchy . Next is the Node mapper.

1.)Layer Hierarchy: Simpler but much slower.

2.)Node Mapper: Similar to sequencer editor where there is an option for preview, The shader editor would also have a preview option called node mapper.

The node mapper will allow the user to organize node groups and also will be able to sync select it to the material or world shader editors.

This could make the node group navigation much faster when you can easily access or select a node group on the node mapper.

Thanks.