I'm running an air/fire kineticist in Agents of Edgewatch right now, level 7 about to hit 8. He doesn't hit as hard as the monk and fighter do every round, but he isn't afraid to use his big powers like the sorcerer is. I have him built around mobility, hit and run tactics. Flying Flame is a must for sure. The ability to hit multiple targets in a crowded room without harming your team is so helpful. He does make use of weapon infusion and versatile blast. Basically whatever damage type I need, or need to avoid, I got it covered. I'm pushing that medicine skill and do a pretty good job of filling in for a cleric without going wood or water element. Though to be fair everyone in the group is using the medicine skill to help fill the role of a missing healer.