I would like to suggest better tools for panning.
Currently I can only move forward and backward if I have my shift and then scroll forward or backward
One can spin the structure around by grasping the background and pulling on the mouse.
But what is missing is to be able to recentre the structure or to pull the view left, right, up and down. Perhaps a panning tool would be a great addition to have arrows to go in that way and to have the home key on the keyboard to centre the structure dead centre in the view.