Yea, this change is negligible. Any increase in DPS we get from the improved hotshot is negated by being able to use cooldown less often.
The barrel stabilizer change is okay, allowing us to overheat everytime...if not for the fact overheating for wildfire is about the same potency as an auto-attack when you account for everything.

MCH needed a lot of love to be competitive. Sadly we've been grinded even further into the dirt underneath Bard's Shadow.

Summoners got it bad too, both MCH and summoner need so much love i'd actually say an emergency maintenance would be justified to help those two jobs out.