The Revised Dark Sun boxed set sucked! And I mean that with every bit of hatred and vehemence I can put into the word.
I have to agree with you entirely. Everything I loved about Dark Sun was messed up in the revision. One of my biggest peeves is their killing of the Dragon at the end of the fifth book. I also have a problem with how easily the sorcerer kings fell. I have something to get off my chest to

...
I ran my Dark Sun campaign for almost 3 years, originating with one party and eventually it grew into three groups ran on seperate nights with plot lines that tied together. One of the groups even joined the veiled alliance, and used their connections to infilitrate Urik to get as close to Hamanu and his templars as they could.
During the 3 year period of time, playing an average of twice a week, only one party "encountered" the dragon. They were travelling north along a ridge, following the sea of silt. Suddenly, a wind storm blew up, and as they covered their faces they could hear a feint screeching above them, through the howling wind. As the wind roared around them, they all felt a sickening pull on their strength, and the plants surrouding them shrivaled to ash. As they dropped to their knees one by one, the wind died down, the sand and silt with it, and the sick feeling subsided..and far off over the sea of silt the silouette of a large winged bird or reptile flew off into crimson sky.
Spoiler: In the end of the Prism Pentad (by Troy Denning, none the less), not only does a warband of adventurers lead by Rikus (18th level Gladiator - who is the highest level in the party) make their way into the heart of the Valley of Dust and Fire (home to the Dragon of Tyr), but they kill him by jumping onto his nose and stabbing him with a magical sword that leakes out this black goo that devourers him. Really one of the stupidest things ever.
The point of this, is the Dragon of Tyr is a mythic icon of the setting, never really meant to be used as just another monster. It is better to run the group against a sorcerer king if you want a high level baddie. The stories of the dragon are that no one has seen it and lived, its a legend that even the sorcerer kings are scared of.
In the original edition Sorcerer Kings sent out cavarans as offerings to the dragon ever year so that he will spare their city. These caravans are loaded with food, riches, slaves, metal, etc and no one ever sees these caravans return. Yet, occasioanlly, a caravan is found by travellers, empty and lost in the desert, completely untouched with all of its riches, except there are no signs of anything living, and all of the containers that had food or water, are turned to ash. This mysterious, apocalytic feel is what the later editions of Dark Sun are lacking in my opinion, that the first captured so well.
Nate