I had some crazy dreams and ideas and then I knew how to integrate the Roadrunner and the Coyote in the coming (hopefully soon) animation of the starting Starfleet from the space dock.
Just some impressions - the next steps I'll post as animation-topic.
The Roadrunner in his UFO:

The coyote recognizing the Roadrunner wile having a relaxing walk on the engine of the serenity:

...it happened the way it had to... a chase:

And now it's the job of Your fantasy. Will it all turn out well or will it end in disaster?

Animation-renders are running. Most of the "standard" space dock views and the animations of the starting fleet are ready. At least I hope so. Some of them I meanwhile re-rendered more than 10 times, because aof never ending changes and improvements

I think it's in fact possible to keep the funny cartoon couple as running gag through the whole film