Production of RES will be low, I'm not familiar with CNBG but the low reproduction of RES "may" help the LMB target a more plentiful supply of yoy BCP. My experience in community waters with BCP has not been good, but we have found that Saugeye seem to prefer BCP as a forage base when available, walleye react in a similar fashion but not to the extent Saugeye do. I don't know..This may not be as bad as one may think. There may be a sad ending but it "may" hold it's own for awhile.
I strongly agree with BM61 here though..probably would be best without crappie.