Hmmm, well to me I kind of lost interest with it being a parody. I watched a lot of Dark Shadows on old VHS tapes which I rented from Blockbuster. While a slow burn, it was a decent show. I've been of the opinion they should try and re-launch it, or something similar again.
To be honest Dark Shadows was zany enough in trying to take itself seriously where I think the idea of playing it for laughs (Which is obvious from the trailers, and just how Johnny Depp looks playing Barnabas) kind of wrecks what was there.
I'll also say that if they are going to re-make something, they need to try and capture the spirit of the original. The problem with this movie (aside from being a parody) and the last attemt to re-launch the show was quite simply that they jumped right into things far too quickly. Part of what sold Barnabas as a character was the gradual built up, with him being a lurking, creepy prescence who did most of his stuff behind the scenes, to the eventual transition. The fact that he wasn't really a good guy (until maybe the end) and was arguably the villain for quite a while is what sold things, and the bit with the Witch didn't come out for quite a while.
I'm not exactly a fanboy, since I'm not that invested in this property, but all I can say in regards to this one is that I have no idea what the people who greenlit it were thinking. I can't see many fans of the original getting into it in this form, and if your not a fan of the original then why the heck bother with the whole "Dark Shadows" name?
Oddly Johnny Depp seeming more "with it" than normal is funny, as the guy who played Barnabas was drunk (and obviously so) during a lot of the TV series.