It would be pointless to make her a werewolf if I didn't get to play a werewolf 
And being an excellent language teacher is her special asset that she intends to use to her advantage. She has an agenda.
And Draganna does not have a positive Communication score! Not anymore. I dropped it to 0. Her Good Language Instructor Essential Virtue replaces that 0 with a +3, but only when personally instruction, and only for the subject of Languages.
She has good language scores. She is not well versed in Arcane Lore. Magic & Farie Lore 3, Infernal & Divine 1. Meh.
A Professional score is 6, not 5. Six is the mark of pro.
And not every one of our grogs and specialists are super. Only the ones that get names and fleshed out. I have been tossing around a lot of comical names for goons that are not suer or exceptional in any way (Lawrence the Lackey, Percy the Porter, Sally the Scribe, Tony the Teamster, Cecil the Chef; guys that are good enough to do their job and live a hand waved existence.
Arnau and the Flame Brothers are the new hit Rock Stars 8). The Andorran Guard are classic but their heyday is long past. The Gold Griffons are solid but not superstars.
If our teaching staff is crowded by great teachers, then I say it is because our teaching staff is too small. We should have three more great teachers and twelve good teachers if we want to compete with Durenmar.
Someone gave the example of old professors. A hit to Com scores sounds quite plausible. As for the disinterested, they are lab rats at heart and teaching is a side duty. The Professional Teachers, those who are dedicated to the task, have the good scores.
As for This Guy...
You present him to me as an example of a mediocre teacher, better than books and still fun to play. I looked at him and he is a Grog with a score of 9 in Artes Liberal and Medicine, 6 in Chirurgy, and a bunch of Formulae. If I tried to pass along a grog like that, you guys would crucify me 
That guy obviously specializes. Dammit Jim! He's a Doctor, not a Teacher!
Draganna is a Teacher, not a Doctor. More accurately, she is a Language Instructor. And a werewolf. And an agent in service to House Tremere. For a season every two years, a Tremere magus might lodge with us for instruction or she might be sent on a mission. Marius has the same deal.