I think the issue that some people are pushing up against (whether they realize it or not) is that, at this point, it's going to be very hard to come up with a killer reveal and motive that is actually surprising or original.
I have been requesting the series to do one thing for a while...
(reveal who GhostFace is during the opening scene)
... but I don't think they're likely to go there because they still want these to be mysteries (to some extent). But if the mystery's solution is often underwhelming to people, perhaps we can leave that element behind now.