Sorry, I was off responding to another thread.
Keith summed my comment up very nicely. In many settings, it's not just outsiders who's alignment is predictable. In addition to dragons, the "evil humanoids," giants, drow, and so forth come to mind. I like demons, devils and angels (the "true outsiders") having fixed alignments. I even use that in my
d20 Modern games, which don't even HAVE alignment.
The one that REALLY irks me is clerics. I addressed this in passing, but while the standard D&D notion that every deity is so active that his clerics all have to roughly conform to his alignment is not exactly suspension of disbelief jarring, it does shoot down some very good plot ideas. Every cleric of Pelor (or whoever) is on your side and can be trusted. Nice, I guess, but it really messes with things in a way that eliminates religious figures as sources of interesting stories - they really become only suitable for motivating very simplistic black and white adventures. Which tends to make for quite cliche gaming.
genshou said:
Very cool. I like the idea of dragons not having a set alignment. I think I may just start using it in my homebrew.
I started doing that ages ago.

I also give tend to give dragons fire breath by default, but that's a whole separate issue.
Hellcow said:
Actually, I never thought it was. My point is that *standard D&D* is far higher than I would like. By the DMG demographics table, the standard metropolis will include an 17th or 18th level cleric (along with a few more in the 15th level range), along with a 16th level wizard and sorcerer. Even in a small city, you've got a good chance at 5th-level arcane and 6th-level divine spells. Again, with Eberron the point is more magewrights and adepts, more 1st-4th level magic... but considerably less 5th-level and above.
See, like Keith, *standard D&D* is far higher than I would like. By the demographics in D&D, a "standard metropolis" has, IIRC, 25,000 people. That means Waterdeep (say) would have something like 20 16th level wizards/sorcerers, and an equal number of 17th level clerics. Umm...excuse me??? That just makes me cringe. If I'm wrong about the 25,000 number, it goes down, but it still makes them a bit too common for me.
And I personally appreciate that Eberron doesn't take itself TOO seriously. At the end of the day, D&D is, after all, a game. And, in my opinion, fun can be had by tweaking, or running with every assumption in it.