Suggestions by @vaulthunter

Kerry Butler

as Charity Barnum in The Greatest Showman

Score: +1

Ramin Karimloo

as P.T. Barnum in The Greatest Showman

Score: +6

Jeremy Jordan

as Phillip Carlyle in The Greatest Showman

Score: +12

Jon Matteson

as Seymour Krelborn in Little Shop Of Horrors (remake)

Score: +4

Gigi Goode

as Madonna in Rockstars Biopics

Score: -1

Reneé Rapp

as Morrigan in A Court of Thorns and Roses

Score: -39

Robert Pattinson

as Rhys in Borderlands

Score: +1

Rachel Brosnahan

as Lois Lane in DCEU fan recasting

Score: +5

Ruairí O'Connor

as Jimmy Olsen in DCEU fan recasting

Score: +2

Noah Grossman

as Jimmy Olsen in DCEU fan recasting

Score: +2

Katie Wilson

as Daenerys Targaryen in A Song of Ice and Fire

Score: -7

Annalise Basso

as Sansa Stark in A Song of Ice and Fire

Score: -2

Lily Cole

as Ygritte in A Song of Ice and Fire

Score: +1

Isabella Sermon

as Arya Stark in A Song of Ice and Fire

Score: -3

Eliza Scanlen

as Daenerys Targaryen in A Song of Ice and Fire

Score: -5

Ben Kingsley

as Chandresh Christophe Lefevre in The Night Circus

Score: +3

Karen Fukuhara

as Tsukiko in The Night Circus

Score: +1

Emmy Rossum

as Celia Bowen in The Night Circus

Score: -7

Daniella Pineda

as Green Lantern 2814.6 in DC Universe Rewrite

Score: +1

Diane Guerrero

as Green Lantern 2814.6 in DC Universe Rewrite

Score: +6