Creatures Caves

I'd really like to fine-tune this outline. I know I had more ideas before but for some reason, it didn't occur to me to write them down. I'm feeling a little dumb because of it but... Any ideas? Have I missed anything? I'm still not sure what rooms to use that would work well with this world concept. Artemia Sea is just the right size for me but sadly lacks land. Aquanornia is what I used last time but it's admittedly kind of small. I'll also try out Devil's Reef and Deep Abyss to see what I can work out.

Matriarch Society
- At all times, there will only be one female in the world. All of her "surviving" daughters* will be exported and tested before being reintroduced. * the term "surviving" will be explained below.

- Daughters will have to pass the classic IQ test (no added hazards). Of the girls that pass, the queen will be the first to breed. In the event of a tie, the girl with the first (leftmost) pregnancy notification will be queen. Once she has become pregnant, all other girls will be exported for a separate run, splicing or testing; deleted; or saved for future upload.

- The male population will not be closely monitored at all and generations might get mixed up. All of the queen's "surviving" male offspring will be allowed to stay in the world and will only be removed if problems crop up. Problems include sliding and other gait issues, failing to pass the IQ test, fast agers, immortals, etc. Fast agers and immortals should be impossible with the genome I plan to use.

- To prevent breeding outside of the aquatic area, males and females will be kept separate until adult hood.

Amphibious Species
- There is an added challenge related to egg laying. Only eggs that are laid on land will be considered viable, "surviving" eggs. Eggs that were laid underwater will be considered "drowned" and will be deleted with the Mini-Recycler.

- Mermaids will not be allowed to enter the aquatic area of the world until they have reached breeding age. In the genome I will use, this is when they've grown their tail. Once they've reached adulthood, they will not be allowed back "on land".

Colorful Creatures- I plan to use CFF, Colortrue Pearlmaids. This in mind, I will start the world with a rainbow of colors. Each time a new queen is introduced, a new, Generation 1 male will be added. His color will be chosen based on the world's dominant colors.

Fierce Competition (?)
- I had an idea to introduce an 'opponent' species, namely Artemia Grendels. I would love to see these as colortrue and do a run similar to this with the Grendels but here, in this setting, I think I'd like to keep their role subdued.

- Ideally, the grendels here would take on Grendel Man's Flesheater Grendel concept and be a survival pressure on the Pearlmaids rather than a natural disaster.

Migratory Mermaids (?)
- I'm not sure how practical this idea is given the limited number of aquatic metarooms. I'll have to do some testing with this, in particular with the latest Swimmer Agent to make sure this is doable.

- Certain aquatic metarooms have food growing year-round while others are totally barren. I'll have to use the Garden Box quite a bit but there aren't very many aquatic patch plants that seem well suited to this environment.

ETA: I'm also thinking about adapting this into something more land-driven. It would be easy enough and might make metaroom selection much easier.