Mono-red artifact affinity.
I would suggest cutting the shocks for more galvanic blast. At the worst galvanic blast is just a shock, but majority of the time it will just be strictly better, no use using shock. Cutting the Goblin grenades for more shrapnel blast will be better as it gives you more chances to get use out of your ichor wellsprings. Try goblin bushwacker instead of Wardriver.