I think the Snyder cut is a whole new colour grade than previously used? I can’t say I’m a big fan of DC movies so I’ve only seen them once.
I’m just watching the original and thinking an overlay could be used in some 16:9 scenes. It’s weird how some scenes have extra bits in 16:9 while others are cropped and vice versa with 4:3. This cut may be more interesting than I first thought.