Why do the devs hate MCH so much?

[Shurrikhan]

Tying a utility into the battery gauge makes it heavily unreliable.

Depends on how sharply the returns on gauge spenders decline when used at less than full gauge.

If a spending 40 gauge at a time between bursts gave as much damage per gauge as spending 100 at a time (so long as one makes sure to have 100 at the ready for the next burst cycle), you'd simply have a base opportunity cost. That'd increase if/when used before too near to raid buffs to regenerate to max gauge, but so long as we're not effectively forced to use our gauge like an inflexible cooldown, it wouldn't outright force any sort of desync.

It'd simply be a utility that comes at cost (likely more than just that of the finisher of uptime it costs RDM or the filler GCD a Swiftcast-Resurrection costs SMN), which then means it needn't be taxed as highly (which means it can be balanced higher for situations that wouldn't make use of it despite retaining that option), much like Ballad/Paeon/Promotion originally.