One idea that I wanted to use in a video, that maybe you would like:
Take all the UEF and Cybran units and arrange them in two long columns facing eachother. The beginning is a scout, lab, tank, arty (putting a few of these in formation would be even better looking), the t1 factory, t1pd, t1aapd,t1 radar, then t2 units, where the uef shield is across from the cybran deceiver etc. This of course goes through the experimentals and at the end you can have the scathys across from the mavor.
With the camera zoom in close to the beginning of the two colums, as if a low flying gunship(could make this an aeon scout tracked with the camera zoomed just below it, so you don't see it until the end), then slowly pan parallel to the two columns with newer and bigger units appearing as the scout gets further and further along.
At the very end after the big guns you can show the engineers and support commanders from each faction gathered around some quantum gates and of course the two ACU's next to eachother. This would also be the good place to put nice batteries of hives and kennels.
At this point you can zoom out so that the aeon scout can enter the camera, and perhaps a naval battle can be seen in the distance.
All this is just dreaming, was actually quite difficult to make look nice, it will take lots of work to make the squadrons of t1 and t2 units face directly at eachother. It is also difficult to find a stretch of land long enoough for all this goodness. Perhaps Ian's cross would be a good idea, there you can put the columns of units on the bottom shelfs, with the engineering core up on a hill. (Of course you can put navy there) Thought about setons, but there really isn't a nice flat piece of land for this one that map, perhaps if you make these columns into curved lines.
Maybe people can make a couple of versions of this in skirmish, save the game and post it here, so that all that Astronomer would have to do is given the aeon scout a move order, zoom the camera and record.
This would be a great illustration of sheer magnitude and scale in this game, as well as point to faction diversity and unit design. You could say, "We have more units than your unit cap."
Another idea that would take a lot more work, would be to remake the Total annhiliation intro using Supcom FA units, but keeping the epic narration.
http://www.youtube.com/watch?v=k6mZZiI4ShQThe most difficult aspect here would of course be who gets to play the role of the peewee.
Looking forward to seeing more ideas from people