Thanks so much for your warm feedback!
I think this idea could definitely be expanded to make maybe a 2-hour experience, I can see it getting quite mind-bending not just for developers but also for players so a ton of planning work would have to be done there for sure.
One of the most interesting parts of designing it is that it felt kind of, akin to making a Metroidvania.
Here's the planning document we used for this one for fun (and yeah, the dungeon crawler was based on King's Field!)
