Just played with IG-2000. Some thoughts:
* The lack of a turret really limits the IG-2000, especially since I was up against TIE Phantom + 2x Squints with AT. Because of that, Hot Shot Blaster is very important, but it is single use only.
Any advice?
Fly in an overwatch formation. Aggressor A flies at range 2-3 in front of Aggresor B. When the phantom engages you can initiate a double attack on the phantom. If they move to engage B initiate a k-turn on both. Once it's down the S-loop is very effective at dealing with interceptors. Also if you build in a way that allows you to largely ignore stress, don't be afraid to boat that stress.