Collins has been known in the past for lack of effort, and looking at some of those plays, it did look like a lack of effort. Campbell even said as much.
5th and 6th rounders can help build depth and this team needs depth. Tyler Crosby is a good example of a solid 5th round pick. The Lions can use more of those players along with getting some starters at the top of the draft. It seems like the Lions are always using free agency to add depth when they could be getting it through late round picks.