Suggestions by @jackamos2019

Manu Bennett

as Slade Wilson in Arrow

Score: +1

Janina Gavankar

as McKenna Hall in Arrow

Score: +5

Byron Mann

as Yao Fei in Arrow

Score: +1

Roger Cross

as Lucas Hilton in Arrow

Score: +2

Annie Ilonzeh

as Joanna De La Vega in Arrow

Score: +3

Colin Salmon

as Walter Steele in Arrow

Score: +1

Jessica De Gouw

as Helena Bertinelli in Arrow

Score: +4

John Barrowman

as Malcolm Merlyn in Arrow

Score: +2

Kelly Hu

as Chien Na Wei in Arrow

Score: +1

Emily Bett Rickards

as Felicity Smoak in Arrow

Score: +6

Jamey Sheridan

as Robert Queen in Arrow

Score: +3

Paul Blackthorne

as Quentin Lance in Arrow

Score: +2

Susanna Thompson

as Moira Queen in Arrow

Score: +1

Colin Donnell

as Tommy Merlyn in Arrow

Score: +1

Willa Holland

as Thea Queen in Arrow

Score: +2

David Ramsey

as John Diggle in Arrow

Score: +3

Katie Cassidy

as Laurel Lance in Arrow

Score: +4

Stephen Amell

as Oliver Queen in Arrow

Score: +17