The idea of Felix, and really all arch-magi, is that he knows most there is to know about modern magic. And, the idea for the characters joining him is that they are supposed to be still learning. So Felix is, by all accounts currently supposed to be completely over powered.

Being an arch-magi is akin to being a professor/recruiter in Societas Academia, or a Witch Hunter in the Disciples. Which is why I restricted characters to not be able to be those last proficiency levels. Felix is supposed to be the guy who directs the team in what they do, while he sits back at base. He is supposed to be the mentor with the knowledge. And thus, the idea was for him to be exceedingly powerful.