MCH Overheat should activate automatically

[Archwizard]

It already does, just not in a way that's obvious to those who forget that the activation animation has an uptime cost of its own. It's fine, and the extra second (putting actual duration at 7.5, instead of 6.5) is probably appreciated by some high-ping players; it's just not as intuitive as it could be.

(That, and roundtrip ping times being added atop animation uptime costs shouldn't be a thing regardless.)

The problem is that designing any high APM job is going to be punishing to high ping players -- you cannot eat your cake AND still have it too.
Even if you remove the Overheat window, you'd still have the Wildfire window which was designed with Overheat's APM boost in mind. The ping weight on MCH is reduced, but still exists within the kit -- unless you redesign Wildfire as well, but then you would unravel the necessity of Overheat creating fast action windows in the first place.

I'm all for OP's suggestion to reduce button bloat, but I think trying to make MCH more "ping friendly" might be overstepping a bit, inflating a simple QoL suggestion into a full rework.