Yea, except none of the proposed alternatives for the north south line interline with the existing north south light rail, and some only have a transfer to it at Penn Station where it has extremely limited service. The yellow line as depicted here is much better - build a tunnel that can service both a new north south line in the York rd corridor and the existing light rail between Camden Station and Penn Station. This would greatly speed up the existing light rail and give it a much better transfer to the metro at Charles Center as well as better downtown station locations on Charles St, enable easy transfers between the two lines, and allow the new line to use existing maintenance facilities and rolling stock. It would also allow trains from Towson to run south to BWI instead of ending in south Baltimore.