"The Arcane Companion has some rules for "tap addiction" you might like the flavor of to express this."
That didn't even cross my mind!!
I have been taking the mental stats average and that is how many PP you can pull in a 24 hour period. Recently I added Con to the mix, still using the average. In the past I have run into problems with people not able to store as much as they can channel in a day. In my mind that make sense. Sometimes your eyes are bigger then your Stomach sort of approach. At 10th level you can do Mental Stat Average(MSA) +25%, level 15 MSA +50%. Every 5 levels you climb 25%. I stop at 300%. If they can store that much, they should have devised a battery of some sort.
Willow... its all about Willow...