I know it is just the trailer, but this movie doesn't look appealing at all, more or less interesting..
I think if they had Dan Aykroyd, Bill Murray, and Ernie Hudson (3/4 original Ghostbusters, Harold Ramis passed away in 2014) and they infamous Louis Tully (The '5th' Ghostbuster in the second film) While they are all in they're senior ages, the movie would be decent. As always, a good if not great movie series is ruined, at least in my opinion.