User blog comment:Arbington/ME3 Theories/@comment-2065835-20100717023549

I think that the life or death of Wrex will play an important role in ME3.

1. If Wrex survived, and his plan worked, the Krogans will be in a much better position to help Shepard.

2. If Wrex survived and his plan goes awry, things might get messy on Tuchanka, keeping them out of the final conflict.

3. If Wrex died, the Krogans may or may not help Shepard. Urdnot Wreav seemed like the warlike type, and he had gained favor with many Krogan due to his traditional ways, but that might also keep him from getting past war with his own people as well as grudges against other species such as the Turians and Salarians.