Rurik said:
Having been an almost exclusive RQ'er I am not as up on the latest developments in Gloranthan Otherworlds. When last I played heavily spirits were pretty much just spirits all around. Ghosts and ancestors and the like were all just spirits.
In RQ2/3 you had the Normal (Mundane Plane), Spirit Plane and GodPlane. Spirits were disembodied creatures that (a) once lived but died, (b) never lived but were devolved from some elemental or runic force, or (c) live but in a disembodied form.
So, ghosts and ancestors were the spirits of those who had died and they could be summoned from the Spirit Plane. The Spirit Plane co-existed with the GodPlane and the Otherworld, which were the things in the Mundane Plane that were outside normal existence, such as the Underworld, Sky World, Lands of Dawn and Dusk, Valind's Glacier and so on.
HeroWars/HeroQuest (HW) changed this quite substantially. It describes the Theistic World, Animistic World and Sorcery World that collided forming the Mundane World. People had Theistic, Animistic or Essential (I can't remmeber the term and my HeroQuest book is more than a couple of feet away) souls and they were quite distinct. So, you had Animistic and Theistic people whose souls went to Animistic or Theistic Otherwordls on the Animistic or Theistic Planes. The Underworld was treated differently as it is a Mixed World, the source of the Planes. The Moon is also treated differently as a Mixed World. So, you start to go through hoops trying to explain why things are different, you have different spells relating to different types of souls and so on. It really is a mess, in my opinion.
I wouldn't get too hung up on the different worlds. Just keep it simple.
Rurik said:
What then are souls in the underworld before they go to their respective otherword? When a ghost is summoned (or manifests) for example does it always come from the spirit plane, or could it in fact come from the god plane? What are say Orlanthi Ancestors that manifest in the mundane world?
To paraphrase a bit of Mormon Theology, a soul is a combination of a spirit and a body, think of it as a hand in the glove, the glove being the Body, the hand being the Spirit, the hand in the glove being the soul. The hand moves the glove, without the hand the glove is just an inanimate thing. The hand without the glove is a spirit and that is the things that departs and goes off to another world.
When the spirit leaves the body, it goes off to another place. Personally, I would keep the term "Spirit Plane" and say that the spirit lives in the Spirit Plane, pure and simple. The Spirit Plane can co-exist with the Mundane Plane, God Plane and Hero Planes, so a spiirt can be both in the Spirit and God Plane, or Spirit and Hero Plane or Spirit and Mundane Plane. A dead Huamikti goes to Sword Hall that is a place in Hell, so it goes to the Spirit Plane that co-exists with Sword Hall. When he is summoned back, he exists in the Spirit Plane that co-exists with the Mundane Plane. If you summon a spirit that was alive and died in the Godtime, then it could well have come from the part of the Spirit Plane that co-exists with the God Plane.
Personally, I wouldn't worry about it too much. You have spells that allow you to summon spirits, no matter where they are they appear in front of you.
Now, shamans can travel on the Spirit Plane and can travel to different places. Clearly, in HW they travel to the Spirit World and may have to go to the Theist World, which is where Otherworld Penalties and other nonsense start to apply. I'd keep it simple and say that a Shaman travels through the Spirit Plane. If he needs to go to Sword Hall, he goes to the Spirit Plane that co-exists with Sword Hall and meets a lot of angry Humakti. If he wants to go to the Trollish Otherworld, he goes to the Spirit Plane that co-exists with Wonderhome and meets a lot of troll spirits. No messing about with Otherworld Penalties and no hoop-jumping to rationalise where he is.
Keep it simple.
Somehow, though, I doubt if the RQM supplements that deal with the Spirit Plane will be simple at all. They'll probably reference the Otherworld Schema from HW and be incredibly complex. Such is Progress.