MerricB said:
But they weren't Greyhawk's established deities...
Sure they were. Lolth was all Greyhawk when she first appeared (in an adventure set in Greyhawk), and to quote Dragon #60, "Evil elvenkind have nothing to do with the gods of the Seldarine. [...] Lolth, the demon queen of spiders and spiderkind, is an infamous example of a lesser divinity who takes much of her power from the worship of evil elvenkind, particularly the Drow."
Ergo, the Seldarine were clearly meant to be the gods of Greyhawk's elves. The same follows for gods of the dwarves & gnomes.
That was in 1982; FR was merely the framing fiction for Ed Greenwood's articles.
Moreover, the 3e Manual of the Planes explicitly mentions Clangeddin Silverbeard (it first calls him a "dwarven hero", but later talks about "the deity"; it's obviously slightly confused.

).
So the mother of the dwarves was Berronar; but now, with Races of Stone, it's Mya (apparently, the mother of dwarves sings R&B). They couldn't simply reuse the name Berronar?
I wouldn't mind Hanseath being an
additional dwarf god associated with war; but to leave out Clangeddin entirely is annoying to me.
I presume the changes were to avoid mix-ups with the FR versions; of course, they still have Moradin and Laduguer in common . . .
There are times when Wizards makes a conscious break from past continuity, and I don't think that it's always a bad idea.
I agree. (For instance, changing most of the dwarven pantheon from greater gods is fine by me.)
However, some of the stuff in Races of Stone was just annoying.
The gods are fairly minor; Berronar, Mya, whichever; the basic idea is fairly similar. Hanseath can coexist with Clangeddin (though avoiding having an army of dwarf gods might be a good idea, one or two more won't break everything).
But, good golly -- Races of Stone claims that the dwarves cremate their dead. Whu-huh?!? Sure, in a D&D world full of undead, cremation sounds like a sound practice. But c'mon. What the heck are all those dwarven tombs and sarcophagi populating all those adventures full of? Heck, Forge of Fury had a nice sized room full of 'em . . . But Races of Stone says, "No other monument or marker is typically given or left in remembrance."
Bah!
Heck, the freaking web enhancement for Races of Stone is an adventure to a dwarven crypt! Full of despoiled tombs whose corpses were tossed in a trash heap. So the new flavor text disagrees with the adventure associated with the book.
Bah!
(The goliaths are cool; but after the dwarf section, I could only skim the gnomes. And I skipped 2e, and so missed anything from any Complete Book.)