We discussed the finer points in this thread some days ago.
It might not be a smooth way to make void form a talent but its a start. I’m sure if blizzard tried then they might come up with something. By try I mean actually try, not just throw it at the wall and clapping each other on the back while it slides down dripping and drooling on the floor lol. https://us.forums.blizzard.com/en/wow/t/a-proper-rework-for-shadow-is-needed-and-my-suggestions/498762/28
Also, If its so hard to balance around and your forced to only play the way blizzard cough intends then that’s more of a reason to go Shadow Orbs route as at least there, you can have option and choices as how you want to play Shadow… our only DPS spec.