Sean -
Kudos for keeping an open mind and finding a clear, consistent, and fair way to set guidelines for fly/no fly conditions for your area.
Here in SD we have had a system in place for the last couple of years, based on the CA Dept. of Forestry (CDF - you've probably seen the letters on the air and ground fire fighting equipment during news coverage of our various wildfires over the years) fire hazard index. It is updated hourly and is listed both on various state and NOAA Web sites.
We stand down during all "Red Flag" days, and my club (MRCF) has a small red flag that we run up during these periods so it is clear for all to see (and follow). I check the NOAA Web site (before packing up

) for our site every time I fly, winter, spring, whatever.
Again, glad to see that all the hububb resulting in a positive outsome (so far).
Cheers -
Barry