Thank you so much for your controller feedback! We have been looking more into controllers in general for various reasons, and I have seen a few others request the option for free button mapping. We mentioned a bit ago that we are working on controller remapping, but it has some slight blockers at the moment.
Moreover, about the game balancing, I think the Protocol V is too powerful as a hit scan weapon. The damage is totally fine, but I think it’s better to set the bullet it shot to projectile. When this gun fused to maximum level, it’s too easy to get “free kills” because of the hit scan bullet
Moving it to a projectile weapon seems to be the popular balancing suggestion from players. I've been keeping an eye on the increase in discussion.