Throwing him on with Parayko under the same usage that Parayko had would be a recipe for disaster, and it's just the opposite of what Edmonton did with him. To me, you either put him with Faulk and give that pair more offensive minutes or you put him with Kessel and they get more of a balanced/defensive leaning minutes. I think I'd start with Faulk, where that pair gets significant minutes, but also relatively sheltered, so that Broberg has room to see what he has offensively and make mistakes without fear of being destroyed by the opponents top lines.
Best case scenario, he's able to take over for Leddy next season or the following season, but lets start with just giving him consistent minutes on his natural side.