There is a book called "the Old Way" which lays out the basics about the psijic philosophy regarding various fundamental aspects but most specifically about the Monk's great dilemma when acting in favor or against the eternal element of Change. The book focuses on a very particular situation in which the monk who is allowed to take alliegace with a lord given the catalysis that the pair could generate for change applied to greater good, but warns of the underlying risk of doing so given that the lord might then ask of the monk to execute tasks that are unworthy and of ill will, and by doing so places the monk in a doom trap given that if he accepts he negates what is dear to the teachings he holds firmly, and by retiring from the lords council he dishonors the order's standing where for he is left with the only remaining alternative which it declares is to take his own life...
When Dovahkin first encounters the psijic in the ruins the monk specifies that a chain of events has been set in motion by the dovahkins action presumably signifying having entered a sealed part of Sardaal. The monk goes on to specify that the originating act will not be held against you given that you were ignorant but that every subsequent action undertaken by you will be duly weighed and judged and that they will be overlooking and have great expectations regarding the Dovahkin. The next time the monk visits he asks you to seek the aguur somewhere in the college where he repeats that they have high expectations. The last time he comes with three other to take the eye of magus away. And nothing else is ever heard of him again leaving no real as to what it was they where observing from you and whether you had been judged to fulfill their expectations...
Given the info in the book along with the whole quest I would expect that affiliation with the order would require that the player maxout restoration perks ( given the connection to the auguur) and possibly alteration given tolgir's fascination with the Eye, I'm sure it would require elimination of the disturbances in every hold, and the book seems to suggest that one would have to refrain from fulfilling any dreadic request since most are tainted in deceit and calamity, or atleast it would require that they are played out in a way that do not violate psijic doctrine whatever that may be...
If there is no way of joining they certainly went through a lot of trouble packing the questline with inconsequential lore baggage