I like it. This route is long overdue. I think the routing via the Broad Street extension makes more sense at it is more direct and provides more connections to other lines. Going via NCS is longer with fewer connections and may require land acquisition to create a ramp between different parts of the ROW.
What I don't get is why all of the alternatives shown follow the Route 19 alignment at the north end. I feel that was included to give an edge to BRT because I don't think new rail alignment with street-running presumably just to get a stop near Main & Ward Streets is worth it. I would think a more straightforward approach would be to continue following the rail alignment to Paterson and make use of the unused trackways on some bridges on that alignment and convert the old freight terminal platforms into a 4-track light rail terminal. That way also creates an opportunity for a stop at the medical center, which would be desirable, and even a diverging route to downtown Passaic on the old Erie main. I doubt it compares poorly against the entirely new alignment idea along that portion of the route.