First off, I'd hug you all. Here, I'll do it digitally.
/target everyone
/hug
Wow. I just realized how much of a geek I am. Anywho...

Fantastic.

And as far as the moving screens go, why not just have some generic city... things. Having a panned overview of Hydlaa, then Ojaveda, then finally the BD Fortress would be awesome. I don't think that it needs to be long at all, just five seconds per city, cross fades, different moving patterns for each of the cities, and it loops on itself.
Doing that and not needing to render the cities can make the startup screen look very nice. Having a computer that has low detail on everything, seeing more low-detail cities wouldn't be big on my list. Not to mention potentially using my time. But, if high res pre-made shots were taken and shown, it'd be a more 'wow' factor, as well as letting me see the cities in full splendor, not just as gray blobs.