I'm A Banana
Potassium-Rich
I'm not sure how many other rules there are establishing the primacy of The Great Wheel - but Planescape would IMO be better served by removing all of them.
Yeah, I'm on your page with that. Certainly as I've played it and as I envision it at its most iconic, the Great Wheel is only one interpretation of how the planes might look. The rules I don't use that might work against that view might include the "Weapons lose plusses as they go away from their home plane," and I think there was a similar rule for clerics casting spells. I ignored a broad swath of the modifications of the planes on magic, and in 3e, I ignored the "alignment" traits of the planes.
Or possibly reworking the Faction War so it no longer changed the nature of the Lady of Pain from one of benign neglect - instead it involved a reality quake so that the Great Wheel itself was replaced by The World Tree or The World Axis or whatever else you like. So yes, there is something you can verify - but it can and has verifiably been changed. So whatever the new hierarchy that emerges is only currently the prime understanding.
In fact the more I think about it the more I think that that would make an excellent start for a Planescape Planeswalking campaign. A reality quake that destroys the primacy of the Great Wheel (which is presented as dominant in the books) and now no one knows the structures or even where the river Oceanus now leads.
Were I to mastermind a re-launch, I would take a "pre-faction-war" starting point (and perhaps describe a faction war as one thing a DM might do with the setting).
I'm not sure a "reality quake" is necessary, if there's no way to tell what the "shape" of the planes is, so that someone could propose the World Axis and someone could propose the Great Wheel and someone could propose the Orrey and it would all be possibly true. I'd prefer the PC's to make a reality quake.
