I decided to turn the C3 aquamites into a GB agent. They're based on the originals and behave similarly for the most part, but they're much more interactive than the originals and are less prone to dying out (and the originals were pretty extinction-resistant as it was).
I think I'm going to focus mainly on Garden Box agents for the next couple releases, and keep things reasonably simple as I work my way back to being able to focus on more complex agents and breeds. Until the next one, folks.