Shader Editor: Alt G to center the selected nodes

It would be great to be able to recenter the selected nodes with a simple Alt G, so that when the nodes are lost in the Shader Editor you can quickly recenter them.

For example it will make it easier to see the node setups when you switch from a material to another. So it's a different thing than Frame All or Frame Selected.

Another great thing would be to easily see where is the center of the Shader Editor, the two main axis are rather thin...