Good point, but with Chronomantic cogs my army moves pretty fast and those Fireglaives are always in range to backup the renders, this army is more of a mid board army. But I'll experiment with artillery.
I just had great success in a local tournament with a similar list. Instead of the deathshrieker and the ironsworn, I had Chronomantic Cogs, Aethervoid Pendulum and 20 Fireglaives. I couldn't believe how well it went, I tabled all 3 of my opponents: Ironjaws, Beastclaw Raiders and Khorne. I was sad though I wasn't able to test my list against more magic or gunline lists. Blackshard armour makes us super resilient.