I would dearly like to be able to create links between objects, which follow when I move the objects around. I've tried about a jillion whiteboard/flowchart typ

I would dearly like to be able to create links between objects, which follow when I move the objects around. I've tried about a jillion whiteboard/flowchart type apps and none of them do this, but yours could! This is because I often find myself trying to mock up a graph of some sort and not know where the objects are supposed to go when I'm drawing them, and then it's impossible to later move them around.