There hasn't been close to 50% turnover in the starting lineup, maybe like 35% of the 53-man roster if you count both kickers, special teams and 2nd stringers? Not out of line for a complete coaching change. Aside from a QB, WR and some LBs, our starting lineup is basically the same as last year, and the new guys were brought in by Nix so I'm not sure what the point is.
To get back on topic, Colin Brown is gone, and I have no problems giving Mark Asper a shot if Legursky happens to go down.