I dont want to se any actors in the movie... And there is 1 reason for that, If lets say they will make a movie, and in that movie there will be "known chars" like say Varian Wrynn, or maybe Illdian Stormrage even. Problem is, we know how they look from the game, or cinematcis.
As a silly example... https://www.youtube.com/watch?v=Kj-wt667oCI Cinematic from warcraft 3 (Illidan), now we know how he looks, and we love it (i do). Now in this movie, lets say a random person "Vin Diesel" will play Illidan. Then he is no longer Illidan, because i wont look at this random actor (dont you dare say the elf from LotR as Illidan *SLAP*).. anyway, wont look at him and say "ooh its Illidan!". Should not have actors at all imo. *breaks heart*