I'm trying to decide between dropping Titus Young for Cobb myself (non-PPR) but I think it would be a classis over-reaction after 1 week so I'll probably just sit tight 1 more week. Looking at your roster it seems like you're pretty set at WR already and have very little RB depth so that's maybe where your focus should be.
The Packers were using Cobb almost as a 3rd down RB. If the deep routes were covered, he was the check down. The big question is will the Packers continue to use Cobb in a Percy Harvin type package and will he continue seeing the ball this many times a game?
I may go after him in my PPR league since adding 9 points before any yards or TDs really helps a player's stats. I really like the fact that Cobb caught every pass thrown his way.
You may have to wait another week to see what happens with Cobb in a Standard scoring league but, if he repeats his production, he will be highly sought after next week.