I was reading through the default settings if you don't import. They SUCK!
Totally, dude. Like, I choose to save Kaidain, as I've never done that before, and, as soon as I began the game, Urdnot Wrex, Thane, Jack, Grunt, and Kelly Chambers were dead. Having Urdnot Wrex dead is by far the shittiest one, as it changes the Cure the Genophage mission quite a bit.