It baffles me that we still have not seen anything happen to how Overcharge is handled. Sienna has too many ways of mitigating it on Pyromancer and todays changes to beamstaff did nothing.
Let me put it this way:
Currently Sienna has too many - too good - ways of handling overcharge.
Heat Sink, Exhaust and venting temporary health. It does not matter if you increase the beam staffs heat generation, no weapon balancing in the world can fix these 3 insanly strong mechanics.
It is time to tackle the problem at its root and it just seems like fatshark have no idea what the problem is when you look at todays changes.
Maybe start by changing Heat Sink from removing 4 overcharge to 2?
It is strong enough as is, if you fight a horde and it procs your overcharge will be gone regardless because you just hit so many enemies with the beam/shotgun.
Maybe make Exhaust remove 75% of overcharge and not 100%?
Or make it so the overcharge moves into the Gray area that way you have the posibility to vent and not simply remove 100%
Maybe make venting temporary health cost more health?
As it stand right now, even if your Burning Head is on cooldown and you run risk of overheating during a horde AND you get no crits for Heat Sink, you can simply vent for 1 second after the last shotgun blast and the lost health will be regained with the next shotgun blast because it simply kills hordes too efficiently.