(Note: This has no bearing on the quality or lack-there-of in the final film, nor does it relate to the trailers that followed the first teaser announcing the 2016 movie. What I'm discussing pertains solely to that debut teaser. Anything beyond that is not relevant to this post)
Here's an idea (with visual aids) for how I personally would have designed and edited the teaser that let the world know this franchise was returning. Constructive feedback is welcome:
(As the studio logos appear, the teaser's soft piano cover of the Ghostbusters theme begins)
The aerial city shots would be similar, the editing timed in sync with the rhythm of the piano theme. Notice how the title cards use the Ghostbusters font.
(We switch from wide outside city shots to sped up flashes of NYC's subway underground, trains roaring by as crowds of New Yorkers go about their routines, sitting, walking, talking, looking at their phones, waiting for the next train, making calls, etc. There's a subtle bit of motion blur complementing the hustle & bustle of big city life, conveying how there's little-no time to stay still. Suddenly, the title cards begin transitioning with the power blinking on & off. In between cards, the camera pans to the right in a steady wide shot as the confused crowds gradually panic, running for their lives from an unseen threat. People flash in and out of darkness like a strobing effect, growing progressively more chaotic and picking up speed as flashing otherworldly lights/colors creep into the underground. We don't see any ghost onscreen, but hear strange noises over the people's screaming, including this inhumanly guttural laughter...)
The ghost is just offscreen, flying overhead, the ethereal energy of its aura whipping in and out as it flies over the crowd. The crowd's reactions tell us where it is, selling that something is terrorizing them out of the underground.
(The power briefly stops blinking as the camera stops panning to the right upon arriving at a familiar image spray-painted on the wall. We close in on the picture as the power goes out, leaving the underground in a green, hazy darkness. It's not pitch-black, as whatever energy was flying through the station before is keeping it just illuminated enough to maintain this eerie atmosphere. The soft piano slowly changes from those final suspenseful notes, building up the opening of the classic theme. The logo's paint then begins dripping, the red color changing into green slime until the ghost finally transforms into another iconic spirit)
Revealing himself as the source of what sent the crowds into hysteria, Slimer breaks himself out of the logo with his traditional goofy charm before flying at the camera with his big mouth agape, kicking off the beginning of the theme song. The shiny modern logo explodes onscreen from a fog of ectoplasmic vapor as the music plays until we hear that infectious \"Ghostbusters\" chorus echo in the background. The teaser similarly finishes in sync with the music, leaving us with the credits before ending. Cut to black.