According to the rules (page 40, Sharpshooter X (unit keyword) ), "when determining cover, add cover value (not exceeding Heavy cover), before substracting cover value" followed by an example.
Now this means that a unit (like the upcoming Leia Organa) with sharpshooter 2 basically ignore any and all cover while shooting, even if a unit has "cover X (unit keyword)"
Now combine this with the "Coordinated Bombardment" order she gets (range 4-infinite, 2 red dice against 3 different targets) and she basically is certain to deal some impressive damage right from the start of a battle, with an average of 1.5 crits (she has ranged critical surge) and 3.75 hits for 5.25 potential hits to save, with basically no cover in addition to her other actions.
Rather obnoxious dontchathink?