You’re going to have to refresh my memory here because Bannon was one of the few conservative voices to hopped on the Trump train very early...
Bannon was appointed as Chief exec of the campaign in August 2016 after Manafort had done his job and left.
Support or not, most of Trump’s positions were crafted before Bannon came on the scene as a chief advisor.
I don’t see how Bannon moving on would change those initial positions because Trump already had them.