I don't think people are really advocating the attack wing die specifically, but rather just a die that has a slightly greater odds of success (replace one blank result with a hit or crit result, or an evade on a green die). This would provide a way for a specific ship (such as the TIE Defender as we have discussed many times before) to be more powerful/accurate without breaking the limit of 3 maximum on attack/agility which I think we can mostly all agree is a limit that should be kept.
The idea itself is actually quite good and it would be foolish to shout it down just because it was implemented poorly in another game or we can envision ways where it might be implemented poorly