Was going to suggest something for this, they're working in the GIT beta already but, only one screen can be loaded (you set a loading screen in the faction xml and it can be loaded).
I'd like to suggest (if not already) a random faction loading screen where you can define a list of loading screens which gae choose from randomly.
Then to expand on that suggestion, maybe GAE could show one loading screen for 10 seconds (or an xml defined amount of time) then fade to another random faction loading screen?