1) Loved the SI storyline myself. Though I only see my SI taking the position at the end, as a way to kill off the others and make changes to the system from within. Of course, that would only end up in failure, as we've seen the outcome of the Star Wars universe already
2) Yes the Empire is dumb. The Republic isn't much better. But after showing numerous times that my BH won't/doesn't serve the Empire, and even after throwing away years and years and YEARS of hard work and gift giving to the Voss with a little sentence, they still hire her and want her to work for them, even though she's been willing to ruin every major Empire plot that she can.