Bright Common Used On Sill Plate

Neighbor had some sill plate replacement done where the top plate was replaced with pressure treated in sections. Bright common 16D nails were used to attach the new top plate to the already existing bottom plate. The job is still exposed. Should my neighbor have the contractor pull the top plate and re-apply a new one using hot-dipped galvanized or stainless fasteners? Or should he just have them add more nails with either of the above mentioned materials should the common nails corrode? We are wondering about the corrosion possibilities of the bright common nails in the top sill plate. Although they will not be exposed to moisture, there is obviously chemicals in the wood. If the nails corrode, which they most likely will over time, what type of damage will the corrosion cause to the wood?