"Maybe he's the leader of the schismatic church here in town, leading people away from the supernatural"
that's not a bad idea but its the the reverse of the story. the Schismatic church has broken away because they want to keep to the pre 1950's traditions so they would be more likely to believe in the supernatural while the "Mainstream" church is "modernizing" treating the supernatural as a metaphor in order to keep up with the times and stay relevant.
This is only important if you want to maintain the realism as the above story is true. there is no reason one could not take artistic license and change it however. of course this would mean a mainstream catholic church that is arming its people against the supernatural. This would be a much more potent foe. I get the impression that Father Forthhill and Michael are the exception in "the Church" and not the rule. If you did make this change I would change the Denarian that is being used Ursiel is a thug not really predisposed to such a long term plan. for this I would select a new fallen angel from this very handy list I found.
http://www.angelsghosts.com/fallen_angel_names.html "I also like that you didn't fall into the trap of "Lets do it all"" Thanks I agree I figure the Reds are busy the Blacks are too rare and despite the interesting work being done by fans on this site I think I want to let Butcher handle the Jade. Fairies tend to come and go and I don't think Spokane is big enough to merit regular intervention buy the White or Black Councils. I was thinking about a local White Council for Eastern Washington, Eastern Oregon, Idaho, Montana, Utah, and Wyoming that would meet in the Masonic Temple downtown on a seasonal basis perhaps with a yearly visit from Listens to Winds as an inspection tour. There should also be a local warden presence of one or two wardens ( all that can be spared) to cover the region and try and keep folks on the straight and narrow. I figure one lower power and semi retired and the other very young and green