I think most of their free agent moves are positive additions and also mitigate at least the need at some positions. But center and free safety I'd put 1-2 right now because they don't have starters there (unless they're moving someone).

Yes, they could use another WR, TE, DE, ILB, CB. And they could even use #37 at pretty much any of those 5 spots and I'd be OK with it. But the current 'needs' seem to be C and FS.