The A star boundaries have red arrows to select and resize the grid. The arrows do not change size as you zoom out so when resizing a large grid it requires zooming in moving the grid, panning the view over and moving the grid, and repeating over again until the desired size is reached. I have seen this to be a difficulty with working on several large scale models. It would be nice if the arrows would change size depending on the zoom.
This would be similar to the gimbal resizing depending on the zoom.