my walk-on (at B+ Tennessee) would be an okay D3 player. has ATH and SPD of 50+, DEF that will finish at 55, BH and P around 50 each, 40ish LP, and REB that will end up in the 20s.
I definitely think a happy medium would be nice. high D1 walkons could be like low D1 average players. low D1 walkons could be average D2 players. D2 walkons could be average D3 players.