Suggestions by @alecroc

LaKeith Stanfield

as Victor Stone in DC Cinematic Universe - Phase 1

Score: +1

Clancy Brown

as Thunderbolt Ross in New Voice Actors to Play Marvel and DC Characters

Score: +1

Tyrese Gibson

as John Stewart in DC Cinematic Universe - Phase 1

Score: +1

Lucas Till

as Barry Allen in DC Cinematic Universe - Phase 1

Score: +1

Alan Ritchson

as Arthur Curry in DC Cinematic Universe - Phase 1

Score: +1

James Marsden

as Hal Jordan in DC Cinematic Universe - Phase 1

Score: +3

Gal Gadot

as Diana Prince in DC Cinematic Universe - Phase 1

Score: +2

James Dean

as Peter Parker/Spiderman in Sam Raimi's Spiderman Trilogy 1950s

Score: +1

Jensen Ackles

as Bruce Wayne in DC Cinematic Universe - Phase 1

Score: +3

Henry Cavill

as Kal-El/Clark Kent in DC Cinematic Universe - Phase 1

Score: +3

Tanner Buchanan

as Frank Castle in The Punisher (2046)

Score: +1

Gary Sinise

as Green Goblin in Spider-Man Trilogy (2002-2007 Alternate Casting)

Score: +1

Bill Skarsgård

as Erik Lehnsherr in X-Men: Days of Future Past (2021)

Score: +1

Emma Stone

as Batgirl (2014) in My idea DC Nolanverse/Singerverse

Score: +1

Christian Bale

as The Dark Knight (2008) in My idea DC Nolanverse/Singerverse

Score: +1

Kate Bosworth

as Superman Returns (2006) in My idea DC Nolanverse/Singerverse

Score: +1

James Marsden

as X-Men: The Last Stand (2006) in Marvel Cinematic Universe (2000's) TAKE 2

Score: +2

Katie Holmes

as Batman Begins (2005) in My idea DC Nolanverse/Singerverse

Score: +1

Rachel Weisz

as Constantine (2005) in My idea DC Nolanverse/Singerverse

Score: +1

Elizabeth Gillies

as Wonder Woman in Man of Tomorrow (2027)

Score: -1