All was not lost, however. I did glean a couple of things from the game. One of the units that I took was a Beast Master Pack. Originally, I thought I was perfectly safe with all of the types of models in the squad, making it durable. However, I did find a weakness to it. It can be pinned and tank shocked. That is a problem. In the future, I will have to ensure it is much closer to the action and use them aggressively, or they will find themselves neutralized. After all, the Dark Eldar are about bashing/blasting the crap out of your opponent, not hiding. They are a very large unit, model wise, so the chances of getting hit by blast weapons is high. Cover will be essential.
In addition, yet another game proved that Wracks are hard as heck to remove from cover (which is hopefully near an objective). I don't think it is appropriate to take more than 4 such units, because they lack long range firepower. However, a couple of them acting as objective holders will be hard for enemies to deal with on a consistent basis.