Some call Tychus Findlay a scoundrel who would sell his own mother for the right sum, while others ... why he wasn't willing to sacrifice himself for a greater purpose ...
Here's what I wondered about. Was he proof that Acturas (sp?) and Valerian were really working together? Tychus was rescued and hired by the Mobius Foundation, and they locked him into that suit. Well, Valerian owned the Mobius Foundation, and at the end, it was Acturas that ordered him to kill Kerrigan. Maybe Valerian was just pretending to be disobeying his father. Then again, why would Tychus help Raynor fight the Dominion and even broadcast his genocidal actions to billions of Terrans? Maybe they could have developed Tychus a bit better.