The GUN is an imperial B-Wing/X-Wing hybrid. The MIS is an A-Wing/TIE Punisher hybrid, and the TIE/ad "Avenger" sits directly between the TIE Advanced x1 and the TIE Defender, in the lore. These three ships lack both topicality and unique mechanics (specially now that the K-Wing "stole" the SLAM from the MIS). So of course they are low low priority for the devs.
True, but a lot of those mechanics are currently only available for one faction.
The topicality can come from the MIS being the IMPERIAL SLAM ship. Or the Avenger being the IMPERIAL T-Roll ship. etc.
If they were ever to make an Avenger, I would just give it advancecd cards and an Avenger Title, adding one attack die.
I wouldn't. If only because the Advanced's dial is woefully unsuited to representing the Avenger's extreme maneuverability.
