This is a good idea but it might be better to combine it with another challenge idea too. So for example you could do a vertical map with an organic creature as its basis. Maybe this should be something that we can opt to do as part of another map too. But I like the idea generally.

A problem with this map is that its a hard one to do. The last time I did something like this was the hideout based inside the skull of a god/titan type creature. It turned out so hard that I made the rooms approx square in the end. Still have better tools this time around but its still a hard option.

We had another challenge idea for an underwater map where these two might go together well.