So no one has tried playing a wizard alongside your upgraded sorcerer? Heck, even your three primary spellcasters (cleric, druid and bard) all wanted something with a more melee combat bent, rather than a more traditional "cast-first". Maybe its just coincidence, but I find that interesting. Don't you?
The same player plays the sorcerers in two different games. None of the other players are really interested in being a primary spellcaster. I would like to see it beside a wizard, though.
The 8th level sorcerer did start off as a wizard, but at 3rd level I let him convert to a sorcerer. This was before I changed the sorcerer to spell points. The change was more for play style reasons. He was a new player, and liked playing a blasty mage. The variety of spells and utility spells of a wizard didn't do anything for him, so he went sorcerer. Obviously, he really likes the class, even before my changes.