Just to give an example of how a trailer looks with some of those after affects, I will share the one I made with it. Its not my submission, simply because I haven't purchased all the royalty fees (around 60 dollars) and because I already submissed mine.
https://www.youtube.com/watch?v=ecV4moSDTzM
Besides that, I do wonder whether the developers actually are going to release complete new trailers themselves for the release itself. Curious to see what they would highlight and not.