I agree with 1&2, number 1 in particular, but I'm not sure I'm entirely sold on the third.
There's already so many people hyping up the Snyder cut based on snippets of (admittedly cool and promising) deleted footage, but what I keep coming back to is the simple fact that you don't pay truckloads of money to fix something that isn't broken. I look at the deleted scenes and go, "wow, this feels more tonally consistent and satisfying than anything in the final film", but I don't see why they'd scrap huge portions of a mostly-finished movie to spend millions hastily cobbling together reshoots (and one of the main actors upper lip!) if there was any chance they didn't need to.
I'm open to discussing this because my mind isn't made up, but I think we'll never really know.