I'm about 36 hours into that particular battle at the moment. In fact, I was so overjoyed by the prospect of the new Space epoch that I skipped straight into the random scenario mode, just to get a taste of what sort of new goodies would be at my civilization's disposal. It just so happens that space is the place for me. The former runs from Marius' reforms to Caesar's seizure of power, and the latter mostly involves island-hopping escapades in which you've got to protect your ground forces from aerial attacks, playing a bit of Battleship in the process. If space isn't the place for you, there's also an ancient Roman campaign, and, for Pearl Harbor buffs, a Pacific campaign. Zap an enemy with ESS, and he'll remain perfectly still as your forces use him for target practice. Dick novel - riot police with access to the Extrasensory Stimulus Signal, for starters.
Kwai Sung on your side, and with his powers of research come scientific leaps straight out of a Philip K. Most notably, as the Chancellor pointed out, there are those pesky rebel forces to contend with, and as fate would have it, they've managed to steal a sizeable amount of military hardware. Of course, the transition is a gradual one, fraught with difficulties.