Both, actually. I doubt most would notice, though. Are you using paths to animate the ships? If not, it might help. (not sure if C4d supports that...)
Yeah, you get my meaning. I think you'd be surprised, though. You can see the ships at the beginning of the clip, if they turned to little more than specks, it wouldn't necessarily be a bad thing. As I said, it'd really add to the sense of scale.
