The HWK is a perfectly usable ship. I think a lot of opinions about certain ships are based upon subjective thinking instead of objective thinking. What I mean to say is a lot of people have their own play styles and certain ships fit into those play styles a lot easier than others. One tries to quantify that the ship doesn't fit their play style but typically does so by subjectively saying "this ship is bad".
The HWK typically fits my playstyle when I'm flying for the Rebellion. I prefer 3 ship squads with 2 heavy hitters and some type of support role. The HWK fits that support role quite easily with any 1 of 3 different named Pilots with Abilities that affect squad mates within Ranges 1-3. Considering how popular 2 ship squads are, meaning two attacks per round, splitting your points into 3 different targets and giving buffs to your attackers is a smart idea in my opinion. Tossing on a turret for 4-5 points more and getting a third attack every round is just a bonus.
And now the B wing does this better...
I love the HWK, and am a huge fan of the video game. Let's be subjective here for a moment. The ship should have been a large base, but it was given a small base to match the video game. Unlike the video game, it was given a large (and slow) dial. Then, FFG gave it a single attack die!?! The pilot abilities are cool, but not game changing enough to give up an entire ship's worth of points for. Unlike the B and Y wing, it isn't even durable. There is not a ship north of 20 points that is so crippled by crits as the HWK is.
Honestly, before Rebel Aces, an argument could be made for the HWK's place in a Rebel fleet. Now, a B-wing with crew is cheaper, tougher, and more useful than a HWK. This is a crime that should be fixed. After seeing the S&V set, I don't think it's going to be.