Ok...i guess you painted the worst case scenario. For the likely scenario I'll plagiarize Mr. GTripp and say Orakpo is probably just Carter reloaded, which isn't a huge addition for us on defense and ultimately doesn't make a great impact for some time cuz Carter probably isn't going anywhere. The best case scenario is Orakpo bulks up a bit and becomes a badass run-stopper so he can be our stud LDE who also gets to the QB.
Probability among the scenarios: 10%, 65% and 25% respectively IMO.
...it's fun to make predictions when they don't count for anything