hell no. It was more of a degredation than an Expansion. A true expansion would have been added on the the original game. Here are my reasons.
1. The Storyline Sucked
2. The ZC was overpowered, especially with that corruption ****.
3. Their units sucked ass, while others were overpowered. Each of the heroes were stealth units. So, i could just land em on a planet, and boom, its ours. Way too overpowered. And, there were very few units to use
On the otherhand, I did like the additions they made to the other factions, as well as the planets, but my list just dragged it down. LA, please remake FoC