I thought I might share my opinions on it as well.

I leveled Gunbreaker solely through trusts. After awhile the sounds grew on me, each and every one of them. And that Final run of Mt.Gulg where I hit level 80 I will never forget.
2 mobs before the final boss, when I unlocked Blasting zone. The first time I heard that noise in game I was so happy and happy with Gunbreaker overall. (my fave tank at this point)

I loved the clink sounds of the parts in the Solid Barrel combo while slashing away. Same with gnashing fang combo, aoe combo, rough divide and even lighting shot. Blasting zone was just icing on the cake.

After the patch that they were "changed" I felt pretty upset. They no longer have the charm to them that I was used to and they just sound awful (like a hollow bat whacking things, no slashes at all).
And they changed almost 90% of the attacks sounds. Bow shock and Sonic break being the only unchanged to my knowledge.
The new sounds are no longer mechanical or have the clink (hard to describe the noise prior to changes but people who play gnb know) sound to them.

I was upset so I voiced my concerns about them only to be met with "my opinion doesn't matter" and told to "kill myself" which at the time of the new raids patch just made the whole experience unpleasant.
But Gunbreaker doesn't feel the same so I haven't felt like touching it since.

That aside, I dislike the new sounds and I know I'm not alone in disliking the new sounds and I and others would very much like the old sounds back. Please.