That sounds great. I may buy it to plunder for my 4e game. Did I see you say somewhere up there that you might do some conversion/integration articles for KQ? Maybe a nice 4e one?
I know you aren't really a 4e fan, but this is your chance to help sell a Pathfinder book to some 4e players and get some goodwill along the way!
*grin* The book is ripe for plundering, regardless of what system you use be it 3.5, Pathfinder, 4e, or even my own frankenstein of 3e, 3.5, and whimsy.
Most of
The Great Beyond is fluff, the vast majority actually outside of the bestiary section. I had some more crunchy sections on some planar items and spells, but they were chopped to keep the book under the word limit. Since Golarion's cosmology is intentionally more fluid (and even demiplanes are given a rationale for what they are and why they might appear in the Astral, Ethereal, or other places beyond those two planes) a lot of things can be plugged in pretty much anywhere. A number of concepts were plundered or adapted from my own pretty classical Planescape campaign I run for my own group.
As for KQ, I have an article (3.5) that should be appearing in the summer issue that covers a number of spells, items, and two artifacts linked to the proteans. Gets into a bit of their methods and some of their history and antagonism towards the Abyss as well. I actually talk about what role the proteans might play in different cosmologies versus the niche the slaadi have, and mention a few in particular. Also, I wouldn't be averse for anyone translating it to 4e stats once it's out, but I don't know the 4e system well enough at this point to do so, and I don't know the particulars of how kosher that would be for me to do. That said, I'd be tickled pink if anyone liked some of my concepts/monsters/etc enough to translate any crunch into a different system (be it 4e, Pathfinder, 2e, True20, or even Synnibarr).
I do have a second KQ article that I've pitched, and which Paizo and KQ seem cool with, but I haven't finished it to submit yet (it'll cover a trio of non-standard Abyssal fiends). Lots of fluff along with the crunch (at this point I'm probably going to wait till the Pathfinder rules are released and use that system, simply because I'm touching on stuff from Paizo's setting, it seems right to use their new system). Again, I'd be flattered like heck if anyone translated things to other systems.
And if folks happen to like
The Great Beyond, Paizo is going to be releasing a planar module
Beyond the Vault of Souls which was written by none other than Colin McComb (of Planescape fame, and Birthright, etc). I've read it, it's awesome, and I did one of the monster writeups in its bestiary.
Perhaps I should write up a planar Golarion one-shot game and offer to run it for anyone at GenCon?
