It might be worth it to discuss these two sources before anyone assumes that they are available for characters.
I know there was a discussion about the 3.0 psionics, and that they were excluded. I do not know whether that was because of a general dislike of psionics, or because they were not yet updated.
Deities and Demigods may not seem a problem at first, but it grants access to a number of domains, spells and feats. Domains is good for deity creation/improvement. But the rest? I guess that has to be discussed.
Feats in the Divine files:
BLINDSIGHT,5-FT.RADIUS [GENERAL]
DISGUISE SPELL [METAMAGIC]
DIVINE MIGHT [DIVINE ]
DIVINE VENGEANCE [DIVINE ]
ENERGY SUBSTITUTION [METAMAGIC]
EXTRA MUSIC [GENERAL]
EYES IN THE BACK OF YOUR HEAD [GENERAL]
FLEET OF FOOT [GENERAL]
HOLD THE LINE [GENERAL]
JACK OF ALL TRADES [GENERAL]
KNOCK-DOWN [GENERAL]
PERSISTENT SPELL [METAMAGIC]
PLANT CONTROL [GENERAL]
PLANT DEFIANCE [GENERAL]
POWER CRITICAL [GENERAL]
REACH SPELL [METAMAGIC]
REPEAT SPELL [METAMAGIC]
SACRED SPELL [METAMAGIC]
SHARP-SHOOTING [GENERAL]
SUBDUAL SUBSTITUTION [METAMAGIC]
SUPERIOR EXPERTISE [GENERAL]
Most of these feats use the revised versions that have been released in different books (such as Persistent Spell having a +6 adjustment).
It seems that only two of them are not updated (Divine Vengeance should be Sacred Vengeance from CW, and Energy Substitution should be Energy Admixture from the MiniHB)
The following Domains were added:
ARTIFICE DOMAIN
CHARM DOMAIN
COMMUNITY DOMAIN
CREATION DOMAIN
DARKNESS DOMAIN
GLORY DOMAIN
LIBERATION DOMAIN
MADNESS DOMAIN
NOBILITY DOMAIN
REPOSE DOMAIN
RUNE DOMAIN
SCALYKIND DOMAIN
WEATHER DOMAIN
<Also, the MIND DOMAIN from the psionics files>
The following Spells were added:
Armor Of Darkness
Blacklight
Bolt Of Glory
Bolts Of Bedevilment
Crown Of Glory
Genesis
Hardening
Maddening Scream
Rage
Surelife
Touch Of Madness
True Creation
Undeath To Death
I think it is easy to see that the Domains and Spells from D&Dg were not updated at all.