Board Thread:The Panopticon/@comment-5791028-20150117172224/@comment-9435571-20150604165941

Each of these non-DWU characters (in the exact same Big Finish version) already crossed over or soon will with the DWU in other releases.


 * David Warner's Mycroft Holmes in The Adventure of the Diogenes Damsel
 * Alexander Vlahos's Dorian Gray in Shades of Gray
 * Vienna Salvatori in The Shadow Heart
 * Nick Briggs's Sherlock Holmes in the upcoming audio adaptation of All-Consuming Fire

So it's not as if including Worlds of Big Finish changes their status in the DWU in any way.