The recent enhancement by allowing automatic insertion of new nodes into an existing workflow through drag-and-drop onto a connector is great.
It would be even better if this was also possible for unconnected nodes that are already on the workspace. I often make copies of nodes in a existing wokrflow, so that they have the same configuration, and then want to insert them somewhere else. In these cases you have to maybe first discconnect some nodes and then connect the node you want to insert manually. Great of this also could be done by automatic insertion through drag-and-drop on an existing connector, similar to new nodes.
I hope you understand what I mean.