I’m not spamming for the dot, just to make sure rr is applied and life leech.
The build is cast intensive as it is, not much room for anything else
I like your ideas with radaggans set and this one.
I mixed it to create a my warlock build to this that i have more fun with that class combo ^^
I used your Meteor Devotion path from deceiver and use a lot of DMG converted items to push all the procs we can have:
chaos>vitality
fire>vitality
Grimtools:
https://www.grimtools.com/calc/p255yRl2
You can use a cabalist to for more RR from the pistol and skills, but i like the warlock too because OA+crit dmg