With the advent of losing water and lava blocks, it would be almost impossible to recreate that functionally on Dig Deep.
I had made a miniature "Atlantis-self-guided-tour-through-the-glass-tube" build on my dig deep map a while ago, but it seemed impossible to see through the glass into the water, and the builds in the water.
In the spoiler below, I was attempting to combine these two images into one self-guided walkway tour, to look at the ruins from the comfort of not having to swim:
So I ended up placing water blocks around the platform as a water tunnel, which kept the miscible water from flooding into the walkway, but allowed guests to freely swim through the water and back onto the platform unhindered.
But now that water and lava blocks are gone, I essentially cannot mess with it for fear of flooding. Using invisible blocks is the only way to keep the water/lava at bay, which defeats the purpose of trying to go back and forth at one's will.
Im glad I made it when I had the chance.