"Maintain control to move links from one output from one node to another "
I think he means this
Right now, you can only drag from inputs to outputs and vice-versa. But what about dragging from one output to another, and moving all links simultaneously?
Imagine, for example, making a detailed set of floor or wall tiles using the brick generator. The brick generator feeds into the height map, a colorize node for the brick colour, an invert node so you can extract the mortar for colorizing it, a mask or two to allow the adding of noise to height and colour etc etc.
Now you want to make tiles made of identical material, but in a different shape, so you drag in a hexagon node. In order to swap out the hexagon for the brick pattern, you now have to drag half-a-dozen or so connections into their new place.
If you could just drag from output to output and have all connections move, that would be much quicker and less prone to errors.