I would love for the game to have a shark drone, as a possible successor to the Spy Pengling from BZ;
Instead of being a land based device, the remote controlled shark (Nibbler) could be deployed in water and steered with a controller with a screen. It would allow to observe certain hostile creatures (Mangos, maybe Hammerheads) from up-close, and explore some tight spaces remotely, while keeping a safe distance yourself, being able to stay in the comfort of your base as you use the drone.
The shark would traverse at speeds similar to a real nibbler, to make it efficient, albeit with a somewhat slow acceleration, and could possibly have full axis rotation (i.e. perform barrel rolls). It would be powered by a single battery, granting a few minutes of constant exploration before needing charging. It could possibly have a range similar to the scanner station (about 200-300 meters), to make it handy for scouting your surroundings.
The drone could pick up and fit a small amount of items in it’s jaw (probably 1-4 items), which could make it useful for collecting resources while avoiding predators, or catching small fish.
The device would emit noises reminiscent of the nibbler to blend in, as well as to scare off any smaller creatures. Other nibblers would stare at it curiously, but be unable to determine that it’s a fake, and would not attack it. However, larger predators such as Marrowbreaches, as well as leviathans, would attack the drone, being able to destroy it. The drone would have roughly 25% health of the Tadpole, making it somewhat fragile, as to balance it.
Another possiblity would be for the shark to have one handle on the top or side of it, allowing one player to attach and ride it, which could make it an efficient short range transportation device as well.