Just be aware of what strengths and minuses play well together. Warlocks are turrets with more durability than most ranged, so rolling them with BM isn't really a good choice. Because there will be fight or flight times you need to choose and someone is probably going to die.

As much as I hate my warlock team in BFA you can sort've play around with some of the fire mechanics by just walling everyone and using spirit link. Though what really murdered this team in BFA was poison.