One of the fun things that I liked about 1st edition Magic was the variable of the Winds of Magic.
I haven't played 3e enough to know if this is a useful idea, but it certainly sounds interesting when I thought it up just now. Details are a bit sketchy, and will probably need some refinement, but how about something like this:
What about having a "winds of magic" phase either at the start of combat or at the start of each round of combat?
Roll one [W] and one to see how powerful the "Winds of Magic" are. (Ooo, fortune vs misfortune Deathmatch!)
*S* - The Winds of Magic are Very strong. All Spellcraft and Channeling checks reduce their <P> by one.
*B* - The Winds of Magic are stronger than normal. All Spellcraft and Channeling checks gain [W]
{C} - The Winds of Magic are a feeble trickle. All Spellcraft and Channeling checks gain a <P>
{B} - The Winds of Magic are diminished. All Spellcraft and Channeling checks gain a
Obviously, if they cancel each other out or both roll {N}, the Winds are normal and there is no change.
Alternately, if the <P> are too much, maybe make it [WW] and [bB]?
I don't know if this is something I would even do ... but it was an idea that struck me as I was thinking of all the interesting things that the 3e dice pool can do. Kinda cool, IMO!