An interesting attempt to rebalance the great original game in this expansion pack ultimately killed it - Forged alliance multiplayer features tech 1 (out of 4 tech levels), and nothing else. Game ruined by a crying community. Real shame.
Of course, I think THQ and Gas Powered Games probably realized early on that their fan base has been dwindling, so this seems more to be an honest effort. It's damn good, but it's just not quite enough to rekindle interest in their game.