Back with "Singular Destiny" I thought that the Typhon Pact would make an interesting enemy, but since then I haven't really found the Pact to be that enemy that they were setup to be. I've read up to Brinkmanship, but right now I've found the Pact is more of a mouse giving off the roar of a tiger and doesn't really seem to be as big of a threat, or even be in the same class of enemy to the Federation as the Cardassians/Dominion or the Borg.
See, that's the mistake people keep making. The Pact was never meant to be just another Big Bad, another basis for war stories. Destiny
was the biggest war/action story you could ever have, and in the wake of that it would've been foolish to try to top it, so the decision was made to go in a different direction, a subtler and more sociopolitical direction. The big conflict is ended, the chessboard has been knocked over, and now the survivors have to rebuild, to establish new relationships and power dynamics, to try out new approaches in a new, transformed galaxy. Powers that once dominated the quadrant are weakened, and that opens the door for formerly marginalized powers to become prominent, and they're jockeying for position and advantage both with the old powers and with one another.
But even with no war in the series, the Typhon Pact stories, for the most part, have been mediocre and subpar, since the Pact hasn't even offered that Cold War feel, and when compared to other Trek mini-series, such as "Double Helix", "Mission: Gamma" or "The Captain's Table", the Typhon Pact just pales in comparison, and a number of the plots seem to be reused over and over in the series, or are so similar to one another (how many times have we seen the Federation implant or extract a spy in the series already?) that the series just hasn't lived up to what was established in "Singular Destiny" for the "jumping off point"; it's landed flat on its face instead of flying.