This is one thing I find ridiculous that it was never actually exploited in the plot and story of BfA. How in the fuck do they present a pitch for an expansion that boils down to "they just discovered magic plutonium dredged up from a dying planet" and fail to exploit that opportunity? The threat of mutually-assured destruction compounded with excavation efforts that could exacerbate the uncontrollable bleeding of your planet would be a pretty powerful existential threat that would add a great deal of drama and tension to the ongoing global war.
I think the Old Gods should've stayed behind the curtain for the entirety of the expansion—they could've further inflamed the preexisting tensions and let the war carry itself. It would've been nice to continue the buildup through BfA instead of shoving two or three expansions into one. The primary story could've been a grayscale war of survival, with Magni serving as the planet's Lorax and a conscientious objector while the Old Gods schemed in the background and occasionally popped up to make sure things keep going the way they want them to. The war itself could've been more than enough for people to get themselves immersed in the expansion, and playing up the existential threat of Azerite would've made it feel far more like both sides were justified. Combine that with a preemptive, but arguably very justifiable, Alliance first strike, and you'd have something pretty strong.