I agree with Hoss in that its VERY easy to get and maintain 30cl with even sub par game knowledge. I could very easily get 30cl right now with almost all "trash" eq, and I don't even play mages anymore.
The main reason I'm still a fan of CL is for the simple fact that if you kill a mage they cannot, typically, just mem 4 or 5 tics and then be at full power. They will need to have stored spare CL, or have friends quickly toss them some, if they want to start throwing around the kinda power that people won't just laugh at.
I see high tier mage spells as equivalent to a tank getting elite eq, and I like that a mage needs to get eq again before they can take full advantage of their elite spells. When a tank dies they typically cannot get back anything close to their high dam level they had before the death (lets assume the tank was seriously stacked), but they can get a couple weapons and, at the very least, still be useful. A mage is much the same in regards to CL, since they can still do damage naked, but it won't be anything like what they could do when fully "stacked".