These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Mary Sue: Virtually the entire cast, sometimes with different members taking turns between chapters.
Magnificent Bastard: Between all the different chapters, Henry Archer (while he was alive) was a millionaire businessman, an absurdly successful ladies-man, and a serial killer with a trophy room, among other things. In one chapter, he's also a smug, egoistic ghost.
So Bad, It's Good: Knowing the back story behind the book changes it from merely hilariously bad to deliciously vile.
Strangled by the Red String: Andrew and Margaret run off together at the end, even though they've never spoken at any point. Richard Isaacs, who has also never spoken to Margaret, is nearly Driven to Suicide for love of her.