Suggestions by @alejandroarenas
5 suggestions

Maxwell Friedman
as M in Best Actor starting with every letter
+1-0Score: +1
Claudio Castagnoli
as James Bond in James Bond (reboot)
+4-25Score: -21

Sarah Jessica Parker
as Beta Ray Bill in Characters who have not appeared, but should appear, in the MCU
+4-9Score: -5

Tom Welling
as Tombstone in Characters who have not appeared, but should appear, in the MCU
+2-6Score: -4

Taron Egerton
as Wolverine in Characters who have not appeared, but should appear, in the MCU
+70-46Score: +24