Hereditary - I know I enjoyed it, but I've only watched it once and to be honest I don't remember too much about it.
Midsommar character decisions - was it the theatrical version or the director's cut you watched? I ask because the latter contains a decent scene (set at night) in which Florence Pugh's character reveals that she thinks the whole set-up and some of the decisions being made by her boyfriend and his friends are very suspect. It was quite a telling addition, but Aster had to edit it out as it followed a lengthy ritual scene set at night which he also edited out at the request of the producers (like you, they thought the whole thing was too long - the director's cut is apparently the version he initially presented to them for release).
As for the Wicker Man, I first saw that when I was very young and it made quite an impression on me. I've got all sorts of Wicker Man memorabilia, including both the UK and USA first editions of the book, which are pretty valuable, and a mint copy of another book called The Quest for the Wicker Man which now sells for £100+ on Amazon. I've been considering selling that because it's not very good.
Many years ago, I loaned a copy of the Wicker Man to my closest friend in work as she hadn't seen it. We like a lot of the same sort of films, so I thought she'd be well impressed with what I regard as an absolute classic. Her verdict: "Load of rubbish. It's like a naked Scottish musical."