More and more, I like this idea.
It allows for both a planted tank, and easy access to the snake. It also precludes having to warm the big tank, but keeps the animal warm below. I like forty-breeder glass tanks. Drilling the bottom, and setting up in a frame that would take the lower tubs would be a big project, but would have many advantages once finished.
I would take out the sliding lid the Zilla brand comes with, and incorporate a precisely fitted lid on the frame, piano hinged at the back (similar to OP kevall1's interior light box). The lid could have lighting, and possibly an RHP installed within it, and all the cords could be routed out down inside the frame's back. The whole thing could be nicely enclosed and very attractive looking.
Thanks to the OP.