Haste should reduce Void Torrent cooldown much like it does for Channel Demonfire.
Channel demonfire’s damage doesn’t scale with haste though, that’s why the cd scales instead. It’s 15 bolts of fire, always.
Void torrent’s duration doesn’t scale with haste, but the tick rate of the channel does, meaning it does more damage the more haste your have.
Having its cooldown scale with haste, as well as its damage, would mean the spell gets affected by haste twice. While that’s not necessarily a bad thing, it’s something shadow already has with devouring plague and adding too much of it gets very scary in terms of stat scaling.
Agree! Being able to have on demand high damage in a predictable way that works well with our CD windows is ideal I think. 3 second channel is pretty long, but if it’s tuned to hit like a truck it’s overall positive