I have a feeling a lot of the younger horror audience don’t get this film as much as the older crowd. Many have probably never even seen the original, just the poor remake.
The tone and atmosphere in The Wicker Man is almost unique. And it’s also maybe the only horror film where an actual death (the classic body count) is absent. Still it creeps its way through and lingers in the uncanny valley for most of the film, rather than falling into all out horror, and all the clichés that usually entails.
The British Kill List did much the same, but eventually falls apart. Unfortunately.
So if you haven’t seen the original Wicker Man, do yourself a favour and hunt it down.