I’m torn on it. Voidform is a nifty concept, but it’s just not practical in a lot of scenarios that happen in WoW.
Don’t get me wrong, I greatly preferred the WoD iteration where we had Auspicious Spirits/Devouring Plague or the Clarity of Power/Mind Spike builds. And Shadow Orbs were simple but effective. Cascade too, was an amazing talent.
Voidform… It’s entire issue is that it was designed 100% with the artifact in mind. Without it, coming into BFA, Shadow was horrible. And as of now, Voidform is only being propped up by traits like Chorus of Insanity and essences. It’s possible it’ll get back into an “okay” state with soulbinds, conduits, etc… But no spec should ever be reliant on temporary gimmicks to function.
As of now, Shadow can be fun on prolonged fights when you can get nice Voidforms rolling, and it can be great on longer living trash in M+(especially if stacking high crit). But, if those aren’t possible? It sucks. Like Wrathion for example(in my opinion). On pull, by the time my first Voidform is ramped and I’ve got good stacks, the phase changes. RIP crit via Chorus, RIP damage from getting into the next Voidform fast with all that crit.
But, looking at Shadowlands. You know it’s horrible design when, last I checked, the best way to do maximum damage was to straight up basically ignore Voidform. You’d use Void Eruption, immediately dump sanity with Devouring Plague and get out of Voidform as soon as possible. Due to Eruption doing so much damage and there being zero incentive to stay in Void Form. It’s clunky and anti fun.