Thanks for the comments. I do agree with Derbacher's suggestion on increasing the amount of Psionics in the world of Eberron.. Especially with multiple psionic-focused races (The Illithid, the Inspired, the Kalashtar, etc) being around to spread the "wealth"...
There is, however, another point about Eberron that bothers me that I can't help
but want to change: The Drow.
I'm sorry, but reading all of the descriptions of Eberron's Drow, including the write-up in Races of Eberron, and I can't help but think: "These aren't Drow.. They're dark-skinned Wild Elves." It's not just a matter of spider-worshipping, either. These guys just aren't worthy of the name Drow, 'cause they're not Dark Elves.
To me, Dark Elves are intended to be darker mirror images of the Elves: where normal Elves are peace-loving, Dark Elves are war-mongering; where normal Elves are honorable and seek to work well with others, Dark Elves are decietful and seek to manipulate or dominate others; Where normal Elves say Up, Dark Elves say Down, and so on.. So, when I see the Dark Elves living as semi-primitive nomads in Xen'drik while their pale-skinned cousins have thriving civilisations in Aerenal, Valenar and amongst the people of Khorvaire, I just find that to be an affront to my Inner Drow.
So, here's my simple fix for the Drow of Eberron: those nomadic tribes of Drow? They're just clans of professional hunters, scouts and treasure hunters, who also serve as a "buffer" for the rest of Drow Civilisation, which is far more sophisticated then most outsiders realize. While not entirely Evil per say, the Drow Empire of Os'Jhal is a very harsh and pragmatic realm, almost darwinian in it's people's constant search to gain power and dominance.
Every Drow is raised on the stories of how their ancestors were once enslaved and abused by the Giants. Upon winning their freedom when their masters lost their power, the Drow swore they would never be anyone's thralls ever again. They have vowed to become mightier then the giants, mightier then the dragons, even.. And to achieve this might, the Drow will stop at nothing: they will retrieve the lost magical lore of their fallen masters; they will weed weaknesses such as fear and mercy out of every successive generation of Drow; they will breed new slaves and living weapons, if need be..
For a good inspiration on what I'm going for, picture Andromeda's Nitzcheans, or S.M. Stirling's Dominion of the Draka: these Drow are racial supremacists, social darwinists, facists and slavers... In short,
real Drow.
I can live with Drow not being linked to Spiders, or not living in the Underdark. Heck, I even find it refreshing. But in my honest opinion, if the Drow aren't at least somewhat evil as a culture, then they're not real Drow.