I have no doubt the trailer will hit, but for me, what I want/hope to see and hear is....
Some of Clark Kent the reporter, and Lois.
A quick shot of Superman performing a huge save, ie, train, ship, etc.
A shot of Lex from the back in Lex-Corp, looking out over metropolis at night, drink in hand. Lightning flashes. We see his reflection in the window for a instant. He has a smug smile.
Superman and krypto, sitting on the moon, looking toward Earth.
The Kent farm.
A shot of the superpowerd villain causing mayhem.
A quick shot of the FOS.
A thief runs. He just snagged a purse. He looks back as he runs. In front of him we see two red boots and some blue come hovering down.
A close up of two hands reaching for the buttons on a shirt, preparing to rip it open, and a tie slowly flutters down toward the camera.
A huge disaster is seen off in the distance, with alot of smoke and fire. Sirens are heard, and lots of emergency vehicles are rushing toward it.
superman is seen flying past them and toward the disaster.
Lex and superman having a stare off, ie. Lex is in Lex-Corp, superman is hovering just outside the window.
All playing to either the new theme or whatever odd choice of rock song Gunn picks.
If it's Anything.close to that, then I'll be a happy camper.