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.
Les Yay: Between Dorothy and Billie, though turns quickly to Squick once you see that the latter is The Wicked Witch of The West
Magnificent Bastard: The Wizard, at first it appears that he betrayed the Good Witches, but it turns out he replaced both the key and book with a copy of the Constitution and Declaration of Independence, and installs a film which is for the purpose of just telling how he tricked her. That is awesome.
Moment Of Awesome: The Wizard replacing the book and key with a copy of the Constitution and Declaration of Independence.
Dorothy attacking Langwidere while she's monologuing and cutting off her head. Doesn't work for long, but she tried.
Allen figuring out Billie isn't who she claims to be, first by asking to see her exclusive magical trinket, and then dousing her with water.
Allen: Well, if you're Locosta, surely you won't mind if I do THIS! [splashes her]
Nightmare Fuel: Princess Langwidere tries to cut off Dorothy's head with a magic sword.
Later, the Witch uses a voodoo doll to mess with Langwidere/Ilsa and takes her head off.
Suspiciously Similar Song: The Wizard plays a song that sounds suspiciously like "Somewhere Over the Rainbow" on a flute. Dorothy remarks that she likes it.