My overly-ambitious idea is an agent that, when injected, populates the bridge, capilatta hup, comms room, all the etc functional rooms, with wildlife. Specifically, I'm inspired by Metroid Fusion when I envision this; As a child the two games featuring space settings I played were Docking Station and Metroid Fusion and as such they've melded together in my imagination.
Funny you should say that. Whenever I've discussed Creatures 3 with my fiance, he's often commented that it sounds like I'm running the BSL from Metroid Fusion. Hehehe. The ability to populate more of the C3/DS rooms with wildlife and to make the ships seem wild and overgrown does indeed sound ambitious, though. Interesting if it can be done.
(This also reminds me, I still need to jot down some Metroid/Creatures crossover sketches. I've had the idea planted for months, and still not gotten around to it.)