Why are devs not focused on buffing the crap tier options and continuing to nerf common loadouts?

In a game that has zero PVP, I'm confused the methods they choose to balance. 80% of all weapons and stratogems are a hinderance to bring because they suck so bad.

First balance round: They claim Railgun isn't as common in success of missions as players said it was.

Then they immediately nerf Breaker, Shield Backpack, and Railgun, the common meta before they nerfed titans and chargers.

Now they nerf Arc Thrower (It's a nerf guys, don't be fooled) and they nerf Slugger, two fairly common weapons players were using. Then they include random nerfs to underutilized things such as the heavy machine gun.

Then they throw in a random buff to the Dominator which will make it a common weapon to use.

Based on their balance history, I'm surprised Sickle nerfs didn't come with this one.

So what are we thinking, Dominator, Sickle, and Quasar Cannon nerfs next round, with a random ass buff to something?

Their balancing doesn't make sense and isn't good if you ask me. None of the common loadouts have been so OP that you need to nerf them. Make more shitty weapons good to use and let people have fun. Stop being the fun police.