May I ask: whose magic do you think is the best suited for them, and which magic would you want?
I actually think you really hit the nail on the head with Jihyun, and the Choi boys. They would, of course, have a power that can not only give but take. It's only good in the eyes of who sees them using it. There's merit to destruction and there's merit to creation, it's yin and yang! You need a harmony of both to make the universe spin.
And if it were me, I'd say Empathy. I put a lot of merit onto feelings, and I want to be able to help others the best that I can. I'm not one of those types that goes with the more physical route, I tend to act more on mental or emotional grounds. Catch me making you work on your feelings.