I do a lot of linking to document references and my most used method is via keyboard (command-L) rather than navigating through the binder to drag and drop a link. The dialog interface that pops up with command-L is nice but not much faster in navigation than using the binder to find and select the document target.
It would be nice in a future version if the dialog for command-L functioned as a search where as you type out the name of the document to link to it shows a list of potential targets, that continue to reduce as you type more of the name. This autocompletion capability I find very helpful in other applications for different functions (linking, searching, etc.) to quickly arrive at the target.