From Fallen London Wiki
The Stacks are now a pretty profitable source of Glim-Encrusted Carapace, and attaching a holy thigh gives 4 to 5 points of Counter-Church Theology. So attaching 8 gives 40x Counter-Church (with enough Mithridacy), for a neat 100 echoes in profit from the Rumours.
It's not quite the same as before, but still quite nice, and a reason to continue souring the holy thighs.