If I want to move a node, I have to select the node before I can drag it around. If I start dragging a node without selecting it first, I create a new edge instead of moving the node.
Annoyed user. More seriously, this is holding several of my team's members back from adopting the product.
The option (possibly a configuration flag) to move nodes without the need to first select them. In orde to create a new edge, I would first select a node and then start dragging the new edge from it.
After creating my inital diagram, dragging nodes around is done a lot. much more than creating new edges. So it would be most usefull if dragging nodes was the most easy option.