Outside of QB and Micah, below are the two most important players for next season imo.
1) DeMarcus Lawrence- He needs to be healthy and productive next year. He has been injured a lot but has been productive when healthy. He just hasn't gotten the sack totals. That needs to change next year. For years he was the first person teams focused on. That has changed. Now every team is going to focus on Micah. So Lawrence needs to be healthy, get at least 12 sacks and a lot of pressures. If he can't, this defense will struggle to produce anywhere close to last years results imo. I would expect turnovers to decrease next year.
2) Terrance Steele- The Cowboys offensive line has a ton of questions marks. LG starter, how good is the center, health of Tyron and Zach, TE blocking, can we run the ball, etc. If Steele is not an above average starter than that adds another hole and I believe the line will be a mess a year. It would just add another hole that will be impossible to patch all of them. If he is above average, they have a chance to piece a solid line together. If he is not, it will probably be the downfall of the offense.
Thoughts