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.
YMMV: Abraham Lincoln: Vampire Hunter
Anvilicious: Nearly every single slave owner and Confederate is portrayed as a vampire sell-out. Exceptions include Robert E. Lee, P.G.T. Beauregard who is seen in his historical role at the first Battle of Bull Run with no indication that this prominent member of the Confederacy is anything other than human and, pro-slavery Democratic candidate Stephen Douglas who does an abrupt Heel-Face Turn once he realizes just what is going on.
Captain Obvious Reveal: Henry is a vampire! ...but the fact that he has large amounts of sunscreen in his house, wears sunglasses all the time outside, can appear places unexpectedly and is privy to inside information about vampires meant that most audience members were well on the that track already by the reveal.
Ho Yay: There's a fair a bit between Abe and Henry. Especially the scene following Ann's death, and when the book notes at Abe's funeral that "Though [Henry's] eyes were incapable of tears, he felt the loss of Abraham Lincoln more deeply than any living person in Springfield that day." Even though Abe's son was also there.
Indecisive Parody: The stark contrast between the film's dead serious dramatic scenes and over the top fight scenes makes it a bit too schizophrenic to take at face value. It works much better as a parody of action movies, but that does not seem to have been the intent of the film's creators.