We've been around the block on the question of Tenure's maximums, but let's consider its happy minimums:
The colleges of magic exist as institutions mostly of normal people -- the coughing bombs and nuclear babies of the organizations are by far the minority. There are plenty of students and journeymen and full wizards, because that's how the model works. They take various positions in order to pay off their student debts and otherwise advance in their careers.
One of the reasons we haven't slapped extra magical hands on everything we do is because we'd get nickel and dime'd to death on it. But, with Tenure, that would no longer be the case, and we can say that confidently for as many actions as we take each turn.
Magister lords are supposed to be attended by platoons of normal wizards who handle severely wizardly positions that a normal person isn't suitable for! These Remora Wizards hang out in the colleges because that's where most of the research happens, but we're clearly researching elsewhere and drawing up career ascending moments that nobody else is getting in on because of what has effectively amounted to a budgetary quibble.
There are plenty of people in every normal position who would fight very hard to get a position doing jobs for us that a wizard can help with. When Mathilde says she's doing this or that, maybe not every reasonable wizard should go 'oh, an opportunity to advance my career underneath one of The Greats', but there should at least be a few takers per offer -- enough to staff our office.
Tenure lets us have unlimited College Favor as long as we're roleplaying as a Magister Lord -- the thing we'd use College Favor to do in the first place. It'll enhance the narrative by letting us roleplay as a Magister Lord much more than we are now, not by forcing us to roleplay less.