The team had it's finest moments forming during the Infinite Crisis. It has never gotten better than Day of Vengeance which has some of my favorite covers ever, and really depicts the magical element of the DCU into something really cool and unique.
The Shadowpact felt to me like it almost had an X-Factor or X-men vibe. So because I think this short lived series might read better and as an appetizer to what should be the ultra-lame Reign in Hell.
I am going to review all the Shadowpact's appearances as a team.