The thing is, the world has what the White Council needs to find new wizards already, it's just that the WC is too snobbish/hidebound/stupid(take your pick, they all apply) to use it.
The Paranet is a nationwide(and growing) group of practitioners who were forced to organize precisely because of the WC's inability to police the magical world on the small scale.
All it needs is a few open minded wizards to make checks every 2-3 weeks, treat the lesser talents with some encouragement rather than intimidation and provide some financial backing for a centralized information center and you're good to go. The Paranet has become as big as it is, while being run by renegades such as Elaine and small talents the WC doesn't see as significant unless they go to the dark side. Imagine what it could be under the aegis of the WC.
Yes, the Paranet could be a vital link in a number of ways, not just to identify kids with potential talent before they go bad, but also as a go between with their parents to educate them about the gift that has manifested itself in their child, the good and the dangers.
