Without Torah one can not say that wrong is wrong. And without philosophy one can't say that a cult is  a cult. But the opposite is not true. With philosophy alone one can justify any wrong. With Torah one can justify any cult. Any set of delusions can be justified.
Thus I see the philosophers of the Middle Ages as providing an important function. The combining of Torah with philosophy allows one to say wrong is wrong and also to identify  cults that are disguised as legitimate Torah institutions.

So what I am suggesting is to learn Saadia Gaon, Ibn Gavirol, the Guide for the Perplexed of the Rambam, Abravenal (Isaac and Yehuda), Crescas and Joseph Albo with the same rigor and depth as one would do on Gemara Rshi and Tosphot.