Depth at this point depends on Saldiveri and Storm Norton development as well as Peat's health. Peat will be backup LT and LG, Sal LG/RG, and Norton RT. So yeah, ton of question marks. I think backup Center is fine for now w/ Garcia.
Norton is 29 and has 18 career starts, bouncing around the league since 2017. Whatever room he has left for further development is certainly questionable at this point.