He has taken a big step this year. Having said that, he is now a true #1 and never will be. He does not have the speed for that and so is a limitation. No need to double team him since he can't out run db's.
If Jenkins can develope for us and be that #1, Crab's can be a very good #2 wr. Don't know if he will stay with that in mind but would be nice.