assuming our starting NIs are:
4 OLs (Greaves, new center, Penser, Neufeld)
2 Recs (Watson, Kohlert)
1 S (Alexander)
our backup NIs would look like
1 OL (eg. Morley)
2 Recs (eg. T.Gudino, Brescasin)
3 FB/RB (Volny, Pontbriand, Fitzgerald)
3 DLs (Thomas, Lucas, Richardson)
1 LB (eg. Stephan)
3 DB (eg. Newman, Muamba, Bucknor)
i think thats is not too bad for rotation especially in the D
lot of NIs to play special teams
the only black spot is in the LB so the other DI should be there