Eragon barely lives. Sapphira might die. Roran (or Roark, havent read the books in a while) lives like a boss. A completely new character becomes the last dragon rider. Katrina marries Roran. Galbatorix dies. Mordach (I seriously have no idea. The guy who becomes a rider in Eldest.) dies. Surda beats (I forgot) Urgals make peace, democracy and all that.
Or Gary, Zuko, and Kaiba come and ruin everything. I'd prefer this.