Sorry, I'm still struggling with the terminology. What is the Foundation?
Isn't that the new (SR5) basis of the Matrix, built upon abused technomancers so it exists independent from actual physical infrastructure.
It sounded like a terrible idea when I first read about it, and exactly not the kind of thing corporations should want, so it's always been a bit of a mystery to me why they went that route. So if that's going to chance, I'm fine with that, though I'd prefer them to retcon it rather than legitimise an in-game reason to change it.
Horrors, Terrors, what ever you want to call them.
I personal feel that it is way to early for them in the shadowrun universe.
They are way to powerful for anyone one outside of the dragons, or Harlequin to handle.
They were overpowering for the Earthdawn that was hundreds of years more powerful with magic.
We are talking about a world where all player characters are adepts or mages at there least powerful.
My Earthdawn group has killed two Horrors, I think. It's never easy (though horrors exist in wildly varying power levels), but with the right prep, it's doable.
Most Horrors would be more then a match for a military companies let alone a Shadowrunning group.
But again that's going by the Earthdawn rules so who knows.
I only hope they don't belittle the Horrors by making them just another encounter type.
I agree they shouldn't belittle them; every single Horror should be a major adversary and not a simple kill in a single encounter. But if it's possible to kill Horrors in Earthdawn, it should certainly be possible in Shadowrun. Keep in mind that in Shadowrun, even Great Dragons are dying at an alarming rate. Horrors are significantly less powerful than Great Dragons (with one notable exception). There are a lot more, though, and they can be incredibly subtle. They don't want to kill you, they want to feed of your misery, and there's plenty of that in the Sixth World.
The main reason why they should be incredibly careful with Horrors is that there's no way back. Once they come, they will continue to keep coming for a couple of centuries, and society will be unrecognisably changed. So if they use them, it should be the occasional single Horror, not a flood of them.
In fact, I believe that canonically, one or two Horrors have already shown up in the Sixth World. In some novel, I believe.