The reasons people take LRT are far larger than just, "is my walk 5 or 10 min from the train". No battling traffic, finding parking, paying for parking, buying gas. It's not necessarily the goal of these trains to put you within 4 blocks of your work. Take any commuter rail line in the US, they all spur in from the suburbs to that city's "grand central", literally only only one stop in the downtown, it's then up to the user to use bus or light rail if their walk is too far. This really isn't that different, and in a perfect world with rational costs yah it would be great to take it down centre street, but it certainly isnt the obligation of every resident of Calgary to fund a $2B++ added cost for 4 subway stops to make things a bit easier for 1/6th of the city. It's going to take looking at this different, maybe a BRT loop in the downtown, adding the 4th rail cars, station modifications on 7th....