Keep going and connect Baltimore to the BWI trail, connect the BWI trail to WB&A, connect WB&A to the DC area network, and also connect the end of B&A to DC. NOVA has such an expansive network of trails (although not all are perfect, by any means) compared to suburban MD.

Also build a bridge over (or tunnel under, although less likely given the elevation on the northern end) Cold Spring to replace that extremely awkward intersection.