The fact that he's already making impressions says to me that the cost of having a known commodity for cheap, is better than paying double for an unknown one.
Unless you disagree with knowing what you have, paying less for it and filling a need within a system, there isn't really any way you can say I'm wrong or a homer.
All I've said is the knock on this guy coming out don't apply in this case and he'll be fine in the system. Why get so bent out of shape?
by the way, I wouldn't use the Lions as an example of who to draft, from what I recall, it's not exactly their strong suit.