This is all very interesting, considering Brolin has said previously that he prefers playing Thanos over Cable.
With Cable, he said he didn’t feel comfortable playing the character and thought his performance wasn’t always the best.
Now that his time as a live-action Thanos may be coming to an end following a What If Disney+ reprisal, perhaps he wants that second chance to take Cable up a notch.
Plus it’s also in his best interest to get more face time on camera.