Nix
I have no concept of what this Omnibus Timeline Universe is; I just want to spin a good yarn and go for one of those huge end-of-the-world scenarios Ghostbusters is so good at doing.
Well, to cut a short story long, the Omnibus Timeline Universe says that the movies, cartoons, and the NOW and 88MPH comics all happened and that's the established history which Fritz Baugh's Ghostbusters stories, The Nightsquad fics (mostly), the GBUK stories and a load of other franchises use as the history of the universe they're set in.
You can read The Ghostbusters Omnibus Timeline over at the Ectozone, and whilst it may appear a bit daunting to someone new to it, it's been organised into neat sections for each ‘period’.
Whatever I'm thinking of, it's definitely outside of what you define as “the timeline”.
And believe me, you'll probably change your mind when you see just what I have in mind with the Dark Army.
It's still possible to do it with GBUK, however it'd likely end up as a “Ghostbusters UK Apocrypha”, which is a title that's used for stories that diverge from the Omnibus Universe, such as this idea you're planning.
Under those circumstances I wouldn't be as objectional, but I'd still have to ask Iain how he felt on it.
Nix
Thinking about it now, it's definitely not within the canon! About the only things that would remain are the characters and the taxi. I have some equipment sketches I'm working on that would make your hair stand on end.
(P.S. When I said “technical specs” I meant things like how to write for the characters, and what kind of dialogue to give them! Sorry for the confusion there.)
I'm not sure I follow you with this bit…
I did get what you meant about the ‘tech specs’ for the characters.