You're setting yourself up for disappointment, imo. He's never produced 50+ points in the NHL. He's a good 3C option, capable of 40 points. He also has a good skill set, keeps his emotions in check and has a good puck posession style that fits this team.
More body of work does have to be seen but expecting more than 40 at this point is just too much. I feel people place unrealistic expectations on players just because they were traded for a 'key' player we had.
Kerfoot is perfect for 3C. Kadri was a luxury, but he made himself replaceable with his antics the past two years in the playoffs. He also had a lackluster regular season last year. He needed a fresh start, Colorado was the team for him.
I think Kadri will be good for Avs, Kerfoot will be good for Leafs. It's a good trade for both teams.