This HM fan doesn't believe that there will ever be a decent movie tribute to our favorite 999 ghosts. To be fair, there are elements that I do like in the Eddie Murphy film, but overall it's a dreadful affair. Disney showed back then that it was more interested in producing pablum than conveying the attraction's quirky gothicism. Also, I've never been that optimistic about Guillermo del Toro's proposed film. Every time I saw him interviewed on the subject he would always stress how he wanted to make a dark and scary film. The problem there is that, as big a fan as he is of the HM, I don't think he really understands the character of the attraction all that well. The attraction has a delicate balance of genuine spookiness and broad humor that at times borders upon the slapstick. To focus upon the dark to the exclusion of the humor will produced a flawed product that is not representative of the original source. The Eddie Murphy film emphasized the silly aspect to the detriment of the spookiness, and we got a bad film. If GDT ever made his film, we would have likely gotten a humorless, dark film. In other words, GDT would have committed the same sins as the 2003 filmmakers but in the opposite direction.
As for Katie Dippold, frankly I don't know that much about her other than her estrogen-laced Ghostbusters bombed. If I could, I would make these recommendations to her:
1. Keep politics out of the film. We have had a lot of non-sense coming from both the left and the right recently, and we need to have some non-political zones. Just look into the mirror a few times a day and say to yourself "I'm not Stanley Kramer. I don't need to make message films all the time."
2. Be comfortable with the idea that you don't have to make a so-called family film. That doesn't mean that the film should not appeal to a general, broad audience, but you don't need to try to appeal to everyone. Little children have been freaking out about going on the attraction since 1969. Why should the film be any different? BTW, a little known film-maker took this approach with some stop motion film in the early 1990s. I wonder how that film turned out.
3. For some inspiration, take a look at some of Vincent Price's horror-comedies of the 1960s like The Comedy of Terrors, The Raven, and the Dr. Phibes films. These films successfully combined legitimate chills with macabre comedy. Just the perfect blend for a HM film.