Thanks! I had, vaguely, thought about it, but couldn't find the time/energy to check.And I noticed this interesting sentence: Much of the original power of the tradition has been
lost in the move to Hermetic magic
We also got confirmation of a Lesser Domain: Control Human Bodies 
So now we know what Tremere was up to, besides Certamen 
And, as @Berengar notes here, the Law of Names, which also increases Penetration, was probably brought in by Guorna 
and her pupils
OOTH, since Leadworker lists new Penetration bonuses, this doesn't preclude Flambeau contributing some things, like the Target's horoscopes 
Next time, I'll probably speak of non- mercurians. Most likely Diedne 
, Merinita 
and Bjornaer 
( in the meantine, note how much fun I have with smileys 
)