My god people. A rebuilding team should make trades like this every year and I hope Dorion continues the trend the next 2-3.
Vladdy has shown the ability to produce, and he is only 27. Why not throw an essentially worthless pick (cant remember the stats but a 4th is in the mid-low single digit territory of playing in the NHL) and see if he can get back to that level? The team has so many quality picks I wouldn't have even cared if it was for future considerations.
There was a chance, albeit a small one, that he played over his head and increased his value. Then you could re-sign the guy for a year or two and get a better pick.
The main benefit though was competition for the prospects. What Detroit has historically done development wise is a bit overkill, but I like the idea. Make a young guy earn his spot on the team, and keep them on their heels in order to stay up.
How many prospects get damaged by being rushed into the NHL? How many prospects get damaged by overcooking in the AHL? I can tell you the first scenario is significantly more frequent than the latter.