Here's what I did to them
Skill points, I give everyone two extra. Make Bluff and Intimidate class skills.
Finally, I allow each sorcerer to select a theme. This could be anything really - something simple like Fire, or 'My spells are the gifts of the animal spirits' Whenever a character describes his spell suitable to his theme, he casts it at +1 caster level.
For this descriptor - most sorcerers should be able to get it for almost every spell. It just has to be described in such a manner that it 'fits'. So the Fire sorcerer might summon small balls of blue flame that slam into the target for a Magic Missile - though this is just flavor, the spell isn't [Fire], generate heat, or set anything aflame. The Animal Spirits character for instance might call upon Eagle, who appears over him briefly as a ghostly image to give him unerring aim for a True Strike spell.
Haven't gotten to try it out, as no one's made a sorcerer. My goal is to help them out a bit, and make them feel a little bit more like just some guy who can naturally do magic. It also was a lot less work than coming up with a bunch of custom spell lists.