I have heard similar things from others, though you went into more detail about exactly why these "extras" are not good (such as Beetlejuice being pursued). Thank you.
I am still going to grab this when I see it in the $5 bin, I would grab the double pack I see at Walmart (with the first movie) but I already have that many times over with special and normal editions on DVD, Laser Disc, VHS, etc. If it was Bluray for both I would grab it now.
From what I have read about Beetlejuice Beetlejuce so far makes me think they are trying to set up a "cinematic universe" or at least a "universe" in the first place. I personally do not care to have to watch several movies, read X number of books, watch these television shows, and keep up with character focused social media in order to have a chance of understanding the latest movie like Disney has done with the Marvel movies.
With the Beetlejuice world, as fantastical as it is, I would give it a shot though.