Dr. Zombie, Kalanyr, glad to have you aboard.
rangerjohn - paladins, as a whole, really don't exist in Vasorn, as they both worship deities and require extensive weapons training. Rangers exist in plenty, though most of them don't know how to use swords and they quickly learn to supress the fact that they have magic at all. It would probably not surprise you at all to learn that most take favored enemy: dragon very early on in their careers.
PrCs I'll be allowing on a case by case basis, but generally there's not going to be a huge amount of them. The places where there still are organizations that have PrCs are either the Underdark, Underwave, or the dragons. Very few PrCs exist outside of those places (though some of the dragon-led and sponsered monster-hunting teams are able to take one common amongst the dragons), aside from those that are also applicable for hunting (such as the Deepwood sniper or Peerless archer).
In the Underdark the Arcane Trickster would be available, as it would be used to infiltrate dragon-controlled cities and free slaves. This is seen as a dangerous profession to say the least. Such a person would call themselves a Cagebreaker.
As for Savage Species, I do not own it, but I might possibly allow something. It depends on what you have in mind. Not all monsters in the MM exist in Vasorn (for example, there are no giants or titans, you don't see celestials, demons, or devils, and there are very little undead creatures, just as a note).
Also, just to be sure, the dragons didn't kill the gods of the lesser races, the dragon gods killed the gods of the lesser races.
Anyway, since we seem to be liking the Underdark, how about 3.5, 8th level, 32 point buy, max HP at first level and 75% thereafter, 13,500gp to spend as you please (no more than half on one item) with a wish list submitted for the other half, and each level of an ECL getting d8 hit points just because I'm a nice DM.