I think it would be interesting to recycle ideas from past games with improvements, so I think the idea of the fish and egg aquarium back into the game is good, a possibility for the aquarium to be in a different form, and for the eggs we collect to give some kind of knowledge about the life cycle on this planet and other types of information or advantages.
I would like if the aquariums were also extremely modular so you could have weird shapes, ESPECIALLY if you would be able to make an aquarium half the room, for example, and also I’d love to be able to, if you made a hall using the aquarium, have a little spot above you where you could make it into a tunnel.