There's some major differences though. The MJ concept was envisioned as a "no-frills" temporary at grade platform. Future expansion down Riverside Avenue would not have been feasible without completely redoing it. Nevertheless, the Skyway is an automated guideway transit system and intended to only be a downtown circulator, not a citywide transit spine. When you start thinking about penetrating other neighborhoods like Springfield and Riverside, there's cheaper options out there than can be just as effective in moving people and encouraging TOD. The next time someone talks about extending the Skyway to the stadium or under I-95, just keep those numbers in your head and you'll become a fan of considering a streetcar for some of those corridors real quick.