Suggestions by @blondie

Alexander Armstrong

as Neelix in Star Trek: Voyager

Score: +1

Nicola Peltz Beckham

as Seven of Nine in Star Trek: Voyager

Score: -1

Michael Kelly

as The Doctor in Star Trek: Voyager

Score: 0

Natalia Reyes

as B'Elanna Torres in Star Trek: Voyager

Score: +2

Mahershala Ali

as Tuvok in Star Trek: Voyager

Score: 0

Ki Hong Lee

as Harry Kim in Star Trek: Voyager

Score: +2

Grant Gustin

as Tom Paris in Star Trek: Voyager

Score: +1

Eddie Spears

as Chakotay in Star Trek: Voyager

Score: +2

Julia Stiles

as Kathryn Janeway in Star Trek: Voyager

Score: 0

John Barrowman

as Q in Star Trek: The Next Generation Movie

Score: +1

Angela Bassett

as Guinan in Star Trek: The Next Generation Movie

Score: +1

Daniel Kaluuya

as Geordi La Forge in Star Trek: The Next Generation Movie

Score: +1

Winston Duke

as Worf in Star Trek: The Next Generation Movie

Score: +1

Matthew Macfadyen

as Data in Star Trek: The Next Generation Movie

Score: +1

Jessica Chastain

as Beverly Crusher in Star Trek: The Next Generation Movie

Score: +1

Ashley Greene

as Deanna Troi in Star Trek: The Next Generation Movie

Score: +1

Karl Urban

as William T. Riker in Star Trek: The Next Generation Movie

Score: +1

Mark Strong

as Jean Luc Picard in Star Trek: The Next Generation Movie

Score: +1