Posting what I said in another thread
I don't think they should use a Stark variant. Even if played by Cruise, Rockwell or another actor. Let Iron Man (live action anyway) rest for a bit.
I think they couldve/should've done either of these 2 things.
Option 1: Have the Illuminati casting be a tribute to the Marvel movies (good or bad) that came before. The line up should only feature actors from non MCU Marvel movies. A lineup could be like
-Xavier/Patrick Stewart or Xavier/McAvoy. I'm leaning toward McAvoy even tho I like Stewart more just because Patrick Stewart got 2 good Xavier send offs
-Reed Richards/Ioan Gruffudd or Sue Storm/Jessica Alba just to play with the expectations of Reed being in the Illuminati. Not sure if Alba would do it since she has said she didn't like making the FF movies
-Eric Bana/Hulk
-Wesley Snipes/Blade
-Jennifer Garner/Elektra. I would say Affleck as Daredevil but I wanted to have another woman on the team and didn't wanna use another X-Man
As said before this would be kinda a tipping of the hat to what came before regardless of quality.
or
Option 2: Have the Illuminati be only MCU related characters/variants
-Director Coulson/Clark Gregg. This would be a variant of Coulson that became director of SHIELD after Fury and Hill died during the battle with Thanos
-Captain Carter/Hayley Atwell
-Captain Marvel/Lashawna Lynch
-Black Bolt/Anson Mount
-Baron Mordo/Chiwitel Ejifor variant...maybe I'm 50/50 on this, I feel like having a Mordo variant kinda takes some shine from the main timeline Mordo and his mission
-Iron Fist/Finn Jones or Colleen Wiig/Jessica Henwick. I know Finn Jones as IF wasn't that well liked but they included the freaking someone from ABC's The Inhumans
-Honorable mention: Ultron/James Spader as a good Ultron variant
Option 1 will be more attention grabbing and will break the internet, but Option 2 makes more sense story-wise. In either case, whichever option they choose the Illuminati would be actual characters in the movie not just cheap cameos.
The storyline should've been Scarlett Witch (or someone) is negatively affecting the multiverse for whatever sympathetic reason and the Illuminati are trying to stop them. However, the Illuminati's is more ruthless due to things that happen in their own universe and they're kinda ****ing stuff up in terms of collateral damage, etc. Strange is caught in the middle.