VG tickbox to hide (on/off) tickboxes of import instances outside view range.
In the visibility graphics dialogue on the import instances tabs have a tick box option to hide external links outside the view range of the current view.
I always wondered why I had to look through all the CAD links in the entire model when only some have a bounding box within the current view range. I understand that sometimes you want to see all the links listed so it could be a featured turned on and off on the VG window.
If there are multiple instances of the same link type then the option could be based on if any of the instances would be within the view range. For Revit link instances there is a treeview that branches could be hidden (upon selecting this feature).