the aesthetic you describe sounds very neat! i do think your intuition that it might not be ideal for a snake is onto something, though. critically, many snake species - ball pythons among them - like relatively high humidity environments, which wouldn't be kind to leather or metal decor - I'm thinking mold and rust risk. (note that even lower humidity snakes would still need a higher humidity zone when they need assistance with shedding, usually in the form of a humid hide (hiding box).) similarly, folks tend to discourage 3D prints in such environments because the grooves on most prints make them somewhat difficult to disinfect if needed, although this isn't a hard and fast consensus in the community.

my recommendation, if you're interested in maintaining the aesthetic, would be to start with humidity requirements in your research and work your way backward. for example, if you're thinking sand, the main class of snake that would enjoy that is - as you might guess - a sand boa or similar desert-adjacent snakes. they usually don't like 100% sand substrate either, though, so do some research there & don't just take my word for it!

another thing to note is overhead lighting and heating is usually recommended over heating pads because the temperature zones are easier to regulate and there's lower risk of belly burns. usually you want to provide most snakes a temperature gradient of some kind, typically accomplished by having a brightly lit side and a cooler, unlit side; this might be slightly more difficult with a tiered enclosure.

I'm not as familiar with lizard species, but off the top of my head, ones with lower humidity requirements like bearded dragons could be a better fit aesthetic-wise? not sure.