There is definitely a huge part of online film culture that is centered around trailers. I personally would love it if studios would put more effort into making the trailers a part of the story, like the ancillary material that is being released for Blade Runner 2049. These not only deepen the story, they lure you into the world. But, as much as I prefer those, a movie theater isn't going to run a seven minute short film in the universe of an upcoming film during the trailers, not without some form of consideration from the studios. Until that changes, the two minute spoilertastic trailer will remain the norm.