Oh yeah! Like some sort of underwater "train" where you build rails and it is powered by a propellor or something. Oh! And it could even be able to bring a large amount of items from one place to the next!
Even though multiple leviathans are on the way, I think something like this would be pretty neat. To be fair, since they have the capability of expanding the map outwards "infinitely" they shouldn't have too hard a time adding a new biome for a mass…
I mean, potentially adding a possible upgrade to the fabricator for something like that would be cool. Like, if there was an upgraded version of the fabricator you could use to make crafting easier. But besides that, changing the look of the craftin…