It would be super cool if we could add functioning water to our custom rooms - maybe for aesthetics, quests, pvps, and more. For the water itself, it could be placed using the marker pen (even just with the tube tool) and be able to be made either static (unable to move and function as regular water does) or affected by gravity (moves around with its surroundings). That way, we could make pools, fountains, levels much like the one found in Isle of the Lost Skulls, and more.
Your pal -
Catnip_Evergreen