Unguided Rockets are an amazing upgrade. For 3-points, it allows native 2-dice attack ships such as TIE Bombers and TIE Punishers to effectively gain a 3-dice attack as long as they have a focus token. The best part is there is no requirement to discard the card meaning they last for the entire battle. These can be paired well with Tomax Bren and an Elite Pilot Talent (such as Crack Shot) of choice to really cause some headaches.