To go back to the original title of the thread literally, how has he performed before the contact singing/announcement compared to since then?
Before: 37 games, 21 goals, 33 assists, 54 points, +5
82 game pace: 47 goals, 73 assists, 120 points, +11
Team had 47 points in 37 games: 104 point pace in the standings.
After: 34 games, 19 goals, 21 assists, 40 points, -2
82 game pace: 45 goals, 51 assists, 96 points, -4
Team had 42 points in 34 games: 98 point pace in the standings.
On one hand, judging a player on 30-40 games is a VERY small sample size. On the other hand, there has been a drop-off in production since he signed (small, but noticable).
I still think this contract is expensive and will start to hurt in the last few years, but ultimately it will be, and should be judged on his (and the team's) playoff success the next couple of seasons.