Yes! The Unity War (or the war of Skovlan Independence) just ended in the setting only 2 years ago. Basically, Skovlan didn't want to join the Empire, and the Empire insisted. Skovlan lost. You could definitely play Blades during that time period.
The Unseen (+1) Tier IV.
The Fog Hounds (+1) Tier I.
The Lost (+1) Tier I.
Lord Scurlock (-1. With Anne specifically, it's -3) Tier III.
City Council (-1) Tier V.
The Bluecoats (0) Tier IV.
Yes, that's correct. 2 or more sixes count as a critical success.
Yep, that's right. They aren't a high priority for the Bluecoats when their Heat is low.
@TwoToneTerran: Yep, you have it right about heat and rep.