A big fat well illustrated sourcebook can rekindle the enthusiasm you did lose at the table with your players. The problem is that following that road means that playing will become the less enjoyable part of your relationship with the hobby, an exercise in frustration, with enthusiastic readings followed by inevitable frustration when the game will fail to deliver on its false promises.
At this point most GM start complaining about having “bad players”, then they stop playing altogether but they continue to buy and read sourcebook, becomes bitter ex-players and start roaming forums and social networks attacking any innovation and defending a ideal “way you have to play” that they never really were able to experience at the table…

My suggestion would be to resist the lure of these lying books and their empty promises, or if you really want to use them: strip all the game statistics and use The Pool to play there.