I'd prefer they make sorcerers more specialized in certain spells than just being "a mage who can cast everything"
say:
lighting sorc (concerning with all lighting spells, 12 lighting bolts to start with, fastest casting.... pretty cool, buahaha, you increase your lighting dmg as you level up.)
fire sorc (massive fire damage, innate fire ability to melt projectile objects, such as arrows, darts. heal by fire attack. burning touch, blah blah blah)
elementals sorc (a sorta balancing between fire sorc and lighting sorc, also does aerial attack)
mind sorc, err... find a better name for substitution: does some mad domination to start with
another way to stand out sorc is to give them some bizzare innate ability that mages dont have, and reduce their casting abilities
whichever way, I dont like the current sorcerer system