So mages don't have the flashiest powers, but with what they know about their aspect could they find loopholes and use them to become stronger?

Hmm, that’s a good point, not only about Mages but also about Seers, finding ways to power themselves or others up could be a worthwhile use of their powers. Mages however, can have quite flashy powers too! The fact Seers and Mages ‘know’ doesn’t mean that’s ALL they do, as I’ve said before, Aspects themselves seem to imbue some people with straight up majyyks they can cast, like Rose with her light beams (More voidy back during the Session). But yes, finding ways to power themselves up and cheat the game could be a think Mages do.