Monstrous Shrine Adding a 2nd Basement?

Nos37

What if Monstrous Shrine was buffed to add a second basement to maps that can support two different basement locations?

The other "benefits" of Monstrous Shrine can stay or go; they are inconsequential. (Skip to 1:46:30)

https://youtu.be/_2G7SL3-8F0?t=6391