Cildarith,
I'm sure the FR authors would disagree.
Henry,
You are probably right. I just assumed it was more GH than anything else, as its Core, and the few pages I have skimmed about Orcus is obvious that it was not written with an 'open' idea, and more of a GH one. But like I said, I don't own it, so I don't know.
Main example I can think of off the top of my head from the splat books was the Fist of Hextor.
Aeolius,
Yes, its unfortunate that they chose to keep certain monsters for themselves. So they are choosing to expand on them in an FR material. Just means that we FR people will use them more. Exactly what effect does any of that have on GH?
WotC decided long ago not to do anything with GH. They decided to support FR and this new campaign world. There is nothing you can do but accept that, keep with the core books, and buy FR books if you want the supplemental material on whatever race they might have focused on in that book.
I buy almost all of the FR stuff because I am an FR fan. Have been since they first put out the gray box. Since I read Darkwalker on the Moonshaes (the most non-FR FR novel there is!). I have Unnapproachable East, and I would really like to incorporate it into my game, but it just doesn't fit. If someone wants to run a character from there, then maybe the book will get used. I have used a feat or two from it, and maybe one monster template.
So how is that different from you buying the book and using what you want in your GH campaign. Perhaps you don't have the expendable income to buy it. Fine. Don't.
I think I've beaten my point to death, so I'll let you get back to your gnashing of teeth.