Fabius Maximus wrote:
I have had a similar idea. Basically, Golarion's multiverse exists long before the D&D multiverse. At some time in the future, something happens and The Boneyard - already connected to the various planes via portals - becomes the Lady of Pain's prison (the Lady of Pain being Pharasma, obviously).
That... that is the neatest idea I have heard in a long time.
I'm still sticking with my "the outer planes are still the Great Wheel, primes are just clueless" explanation, but your idea is truly awesome.