Here are my ideas....
Bx89:
From E 233rd Street and White Plains Road to Bay Plaza, serving Wakefield, Willamsbridge, Co-Op City, and Bay Plaza via Barnes Av, E 236 Street, White Plains Road (Northbound), E 233 Street, Bronxwood Av (Southbound) E Gun Hill Road, Bartow Av, Baychester Av, Co-Op City Blvd, and Terminates at Bx29 terminal.
Bx37:
From Valentine Av and E 192 Street, to Gateway Center Mall, serving Bedford Park, Fordham, Tremont, Highbridge and Melrose, via Grand Concorse, Kingsbridge Road, Valentine Av (Northbound) Fordham Road (Southbound) Grand Concorse, E 149th Street, Gerard Av, E 151 Street, and River Av (Southbound). Terminates infront of North Retail Building.