I'm of the complete opposite opinion. I think the sound bite are horrid. Whenever the the Advent Purge Frigate says, "Who must suffer!" I think to myself, "I do, from terrible dialogue!"
The reason teh funny sound bites work in WarcraftII, and all of Blizzards games (that I can think of), is because tehy have a different feel to them. Sins has a very dark and grim feel to it. Very Industrial (realistic) looking ship models, dark textures and so forth. Blizzard games feel much more "fluffy' or cartoony. If they fluffed up the graphics in Sins (please, NO) and made things cartoonier it might work. As it stands now I don't think the two styles marry well.
If anything I would take the opposite path, a-la Homeworld. Make the ship dialogues more crips and professional / militaristic.
Side note: I had an earlier post where I said that if I were the Emperor and Warmaster of an Interstellar Empire and a Frigate told me "GOOD ONE!" or "I'll consider it" they would spend the rest of their tour peeling potatoes in the galley and cleaning latrines throuought the fleet!
My 2 cents.
snazzed