For me, MCH would be perfect if:

1) HC is buffed from 5 to 8%, to match BRD's raid-wide DPS;

2) Gauss Barrel didn't deactivate after the 10s off. It is just a chore to equip it back;

3) Overload didn't destroy the turret, making you have to put it back up. Just make it go Out of Action for 30s.

So, yeah, just two QoL changes and one DPS buff to catch up with BRD and we're good to go.