Church goers using parking lots like this is a use, but I doubt it's a productive charitable use that should to be subsidized by localities.

Every other contemporary development in my area that faces real economic reality is ground floor retail, commercial/residential on top, and optionally underground parking.

There are certainly productive religious charitable efforts using facilities like this: homeless shelters, community low-cost/free clinics, soup kitchens. I think these uses should be tax subsidized, but other mystical efforts should not be whether they generate a profit or not.

I think a good reform to the 501c3 system would be to make non-profits like these churches and hospitals classify their actual charitable activity and separate it from their other activity, just like individuals with a mix of personal/small business income/expenses are required to do.