heeseung is so talented but what makes him stand out even more is his personality, when other trainees opened up about their complaints to him he tried his best to handle the situation calmly, he makes sure to make other trainees feel comfortable around him +

by hugging them, being clingy, he even came to the green room where youngbin is and acted silly which probably is his way of saying sorry & comforting him (for making youngbin feel bad during the solo evaluation thing) +

he gave up on the center position despite knowing it will give him a huge disadvantage thinking it would be better for the team. he acknowledged his mistake for doing things his way without consulting the other trainees +

he cleans their room voluntarily and makes sure everything is tidy. you can never see any sign of arrogance in him despite being praised by other trainees for his dancing and singing

despite all the pressure he still knows how to have fun and usually jokes around with other trainees. he's already very talented and with that personality i believe he will succeed.