Controversial opinion... Not all horror has to be event horror and that a lot of what we are perceiving as Indie Horror success right now is actually just a form of mainstream-like hype.
Take Longlegs... The trailers, the casting of Cage... These are classic mainstream cinema tactics.
Novelty is fine, but doesn't that ho back to the times of free vomit bags and life insurance policies?
Maybe grabbing attention should be from well crafted films telling great narratives that resonate with audiences, and if you have to think "outside of the box" then your box isn't big enough in the first place.