So, I suppose, as Caelic mentioned in that monstrosity of a thread, that a generalist artificer is probably the best route. With little effort, he can cover most any situational effectively, he simply won't be better than an optimized specialist at that role (ninja, fighter, buffer, blaster).
Probably as good in most cases, though.
With metamagic item infusion, I can apply quickened and twinned to either a pair of Orb of Force or Energy Sub: Acid Fireball wands. Along with Dual Wand User, this means 6 of the aforementioned spells in a round. Either 84D6 force damage on 1-3 targets, or 60d6 to an area. Good enough for nova blasting. Using the Cannith Wand Adept dual wand use, that means 1d4 charges from each wand, each round. Can be done with no prep time for 1d4+8 charges from one wand, 2d4+16 charges from the other. That's damn spendy, but if you have to use it, it's probably worth it. I can't imagine a situation occurring in my games where I would need more than that.
Buffs, fighting, and ninja can be covered with good spell selection.