TE is definitely lacking, even if Kroft is healthy to start the season. However, TE isn't usually a strong spot for most teams so hopefully someone like Knox is a surprise.
RB, I disagree. Gore/Shady's age are of concern, but given the depth we have, not a big one for me. TJ Yeldon is, at the very least, a solid 3rd down back and we used a high pick on Singletary. I'm fine with our backfield.
WR all hinges on Zay and Foster. Cole and Brown are nice ancillary pieces but we really need the two young guys to elevate their game to get this unit to the next level.