Well...maybe shapeshifters, but Paradoxes ported straight over would be pretty overpowered in both Big Bad Wolf Limited and Evil's Return, as they tend to be physically powerful, have magic-like powers, and are very hard to hurt.

Plus, there is that entire cannibalistic berserker monster that can go out of control at a moment's notice part.

Still...entertaining this idea for the time being...the cross over that would make more sense to be would be Big Bad Wolf and Evil's Return. Who better to guard the Mother of Hell than a bunch of eccentric mercenaries?

I retain the rights to say that this was my idea of it turns out to be popular, and to say it was Teal Mage's idea if everyone thinks it is stupid.

I support a potential BBW/Evil's Return crossover. If just to bring true ToastBurner's prophecy.

Why not just cross them ALL over.

Big Bad Wolf on a joint operation with SIDS has been sent into the far future by the Tanar'ri Armada (which was mistakenly believed to be supernatural), where they end up on a F.A.R.S. ship that is heading to earth where disturbances have been reported due to the mother of hell being born, meanwhile a strange alien parasite begins to transform the crew into paradoxes, and death sends his agents after the BBW because they were supposed to die millenia ago.

When they arrive they find they need to not only contend with the mother of hell and the hell gate, but also strange angelic beings with near godlike powers who have seemingly appeared out of no where to battle the encroaching demons.

Mostly because when you phrase it like that it sounds like a horrible crossover fanfic between Supernatural, Doctor Who and Star Trek.

Castiel mistakes Dr. Who for an angelic being or perhaps even God, and brings Sam and Dean onto the Tardis, where Sam accidentally causes the Tardis to bring them to the bridge of the USS Enterprise. Once there the Q collective notices the disturbance in space time and transports Sam, Dean, Castiel, Dr. Who, Picard, his crew, and Kirk and his crew all to the Q continuum, where Sam tries to convince them to help end the apocalypse in their world while Dean frees THE Q, who promises to help them if they can stop the continuum.

Meanwhile, The Doctor has a pleasant discussion with Picard, and finds that Q is not to be trusted, and tries to stop Dean with the help of Castiel, but Dean has already gotten Kirk on their side.

In hindsight, I really should of seen that coming

If you're actually considering it, Big Bad Wolf's magic system seemed more interesting than Evil's Return's rune system (not to mention more compatible across the board). Of course, there's no real reason why both systems can't operate in the same world, but it might take a bit of thought on your part to manage.

More two cents from me!

That's what, four?

Yeah, I figured if things went the way of the cross-over, most of the mechanics would be carried over from Big Bad Wolf Limited. The sigil system worked with Evil's Return because ER required a bit more tighter control. Big Bad Wolf requires a bit of a looser rein. So, if we go crossover, we'll scrap the sigils this time around.

Really, the main problem would be working demons into the BBWL system. Exorcisms and all that stuff would have to be justified, as well.

Wait...when did I start to take this idea seriously?

You got disoriented by Krylo's blindside attack of crossover summary and that made you easier to take advantage of for the rest of this idea.

Not to say it is a bad one, but if you needed a reason why...

I'd play it!