Perhaps if the TP were to expand it's membership and add some new races to the mix then maybe they might be considered something other than "an evil empire".
But we've already seen a great deal of diversity in the races that already belong to it. We've seen Kamemor's Romulan government portrayed sympathetically, we've seen the Kinshaya enter a new era of reform, and we already know from prior works such as The Gorn Crisis and Articles of the Federation that the Gorn have been mostly friendly toward the UFP in the past.
Shallow and boring as that may be Christopher but as I seem to be the only one pointing this out...the very first act we see perpetrated by the Typhon pact is an invasion of sovereign Federation territory by a cloaked Romulan vessel...the theft of valuable Starfleet technology and the murder of Federation personnel.
You're the only one pointing it out because it's dead wrong. You seem to have forgotten that the Typhon Pact was introduced in A Singular Destiny, which was published a year and nine months before the book you're referring to and set nearly a year before it. And the Pact's first official act on the galactic stage was to stop the Kinshaya attacks on Klingon worlds and formally apologize for them.
Keith R. A. DeCandido created the Typhon Pact along with Marco Palmieri, and he made a point of introducing them as a multifaceted, ambivalent power, one that had multiple conflicting factions and potentials within it rather than being monolithically villainous. Keith made it clear in ASD that while it did have members with hostile designs, the Pact as a whole acted as a stabilizing force that kept them in check. And the subsequent writings about the Pact have borne that out, showing both the positive and negative forces competing with each other for dominance within the Pact. And as things stand as of the end of The Struggle Within, the moderate factions within the Pact outweigh the militant ones.