I suggested to muse that the new reload mechanic should be a gunner exclusive ability (while everyone must stay on the gun and wait for the ammo to fully load to load their own ammo).
It doesn't make double gunners viable (per se) but it definitely makes them alot more necessary.
Their main concern was that people have gotten too use to the new reload mechanic being universal that the roll back of the pilot and engie class would garner some buttmad complaints (not that such actions stopped muse before-hence this excuse is a bit lazy).