To answer the posted question plainly, NO.
Should they? YES
What position? WR
CD is a dynamic play maker that can break a play at any moment. But, I'll get blasted for saying this but IMHO, his best work is done inside the hash marks. He isn't an outside, crisp route runner, chain moving, ball security, big bodied true #1. He is much better suited to be an amazing slot #2 play maker. Gallup is a great #3, but just an ok #2. Brown is just an ok #3 but a good #4. If they could land a true #1 they would be much better off. CD can still be "the man" who makes all the headlines, without being the guy that makes the chains move.
DT play hasn't been bad and at times it's been very good. At the very least it is much improved and I don't see them spending more assets there knowing this.
LB has been addressed as well. Parsons maybe the best defensive player in football. They need the others to be better so he can do what he does best, which is attack the football. LVE hasn't been bad, not great either. Barr has been ok. Cox has been a let down thus far. But the wild card here is Damone Clark. If he is about to return fully healthy from his neck issue as has been reported, they will absolutely be counting on him to give this group a boost.