Yeah, the hex ability couple with scorching ray gives so much potential for damage. That's the kind of thing that would hurt if the NPCs started doing it to us, lol.
Could you imagine having to fight Nere if he was built as a sorcerlock?
But personaly i have much fun with combining certain items ...
I spend a lot of time considering different item combinations also.
Recently, I was disappointed by the Gloves of Flint & Steel. I put them on Lae'zel along with Everburn, but I couldn't get the effect to trigger more than once. At first, I thought it was bugged because it just wouldn't trigger. No one was catching on fire. And then in one fight, an ogre caught on fire after getting hit.
But I feel like that ogre had to roll a 1 or something because no one else anywhere else caught fire.
My guess is that it's a super easy target number for the save (like maybe as easy as 5), and the targets are probably even getting advantage.
Very disappointing. I really wanted it to work well as a combination.