Yeah, I'd rather vampires stay out of Ultimate as well, or at least away from Spidey. Spider-Man needs to stay where he is, a street cop. As soon as Peter starts getting involved with large scale affairs, cosmic powers and magic it just doesn't work, especially at this point in Peter's life. I could see him maybe as an Ultimate or a member of SHEILD in this universe when he's a good deal older but for now he needs to keep local. The basic idea of Spider-Man is that he's not some big shot hero, he's a scared messed up kid who puts on a costume out of an over developed sense of responsibility. Spider-Man is Peter Parker, and as such is supposed to be the acerge person. Anything too weird and you lose the basic concept that makes Spidey work. The odd time Spidey does step off the streets of New York it should (as it did in Ultimate Six) make it abundantly clear that Peter is out of his league. There's a sense of wonder and fear over what's going on in his life (as it would to any normal person) and if you put him too out there it's lost. No vampires no demons, no magic or aliens for Mr. Parker. Period.