I actually think depth at both of those positions is ok for now. There are two tackles (Alabi and NPF), guards in Cupp and Miller, and Miller can play center if needed as well. NPF isnt transferring because he is going to start next year when Munford, Bowen and Alabi graduate. Next year is when there is a concern with depth. As long as guys like Jones, Vimahi, Cupp, Jacoby, D. Jones and Wray keep developing then there is not much to worry about. Especially with Paris Johnson coming next year and looking to get PT as difficult as that is.
LB is also deep and now that they play 2 LBs and sometimes 3 they are fine. Guys like Gant, Pope, Mitchell, Stover and Eichenberg are going to step in just fine.