Suggestions by @optimistic_writer

Timothy Dalton

as The (Second) Rogue in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Paul Cornell

as Script Editor in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Tony Redston

as Producer in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Steven Moffat

as Co-Executive Producers in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Robert Shearman

as Co-Executive Producers in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

D.C. Fontana

as Co-Executive Producers in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Ronald D. Moore

as Co-Executive Producers in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Julie Gardner

as Executive Producers in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Ira Steven Behr

as Executive Producers in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Tucker Smallwood

as Fen Do'nel in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Nicholas Briggs

as Daleks in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Anna Hope

as Commander Sandra Armstrong in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

John Leeson

as K-9 in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Christopher Biggins

as Francis in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Gai Waterhouse

as Presta in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Will Patton

as President Francs in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Geoffrey Bayldon

as The Master in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Louise Jameson

as Leela in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Sophie Aldred

as Ace McShane in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)

Siobhan Redmond

as The Rani in What If Doctor Who Wasn't Axed? - The Eleventh Doctor (2006)