First things first: this has NOTHING to do with the Argo. Scratch the Argo. Forget it. Bury it in soft soil and leave it there, until I get a texturer.

And fine, there's no way to do the subsystem-on-subsystem thing.
Think like this: I got a ship. A nice ship. See this ship? Oooohhh, wow, it's a nice ship

!
Now I wanna put a tail on it!

I want to put flaps on the back, kind of like the ones on the Zephyrus. And I want these flaps to go up and down, like wings, or the tail of a fishy. And I want this animation to be a loop, like the rotating solar panels in the Faustus. I want it to go up and down ALL THE TIME, from the minute the mission starts to the minute Alpha 1 jumps out.
Possible?