Suggestions by @ darthreevan

Viola Davis

as Fugitive Doctor in American Doctor Who

Chris Pine

as Eleventh Doctor in American Doctor Who

Peter Falk

as Seventh Doctor in What If Doctor Who Was American?

+3-2Score: +1

Jodie Whittaker

as 12th Doctor in Doctor Who (1996-Onward)

+1-2Score: -1

Sophie Aldred

as Dorothy Ace McShane in Doctor Who

Janet Fielding

as Tegan Jovenka in Doctor Who

Bonnie Langford

as Mel in Doctor Who

Louise Jameson

as Leela in Doctor Who

Frazer Hines

as Jamie McCrimmon in Doctor Who

Lalla Ward

as Romana in Doctor Who

Elisabeth Sladen

as Sarah Jane Smith in Doctor Who

+2-0Score: +2

Wendy Padbury

as Zoe Heriot in Doctor Who

Geoffrey Beevers

as The Master in Doctor Who

David Banks

as Cyberleader in The Seventh Doctor ( 1987 - 1995 ) What if Doctor Who wasn't axed

Terry Molloy

as Davros in The Seventh Doctor ( 1987 - 1995 ) What if Doctor Who wasn't axed