Tyler Soy is a nice player but imo any NHL potential will depend on him learning to be more assertive on the ice.
He tends to stay on the perimetre a bit too much, and is a pass first type despite having some game breaking tools. A growth spurt, leading to more confidence and willingness to attack head on would do wonders for his game. The fundamentals are in place in that he's an above average skater and passer, has a great two way game and good hockey IQ. Overall, I wouldn't say any part of his game is spectacular but he is complete player, physical traits notwithstanding.
Next year will tell a lot as he will be put into a leadership position and will be relied on to produce offensively rather than play the support role that a pretty deep Royals team is affording him now.
Long term project that projects as a Chris Kelly type player.