As for the issue of walking outside in the cold, could they consider building underground foot tunnels? Not sure if it would be possible to link them to existing buildings easily, but one could at least build a network of foot tunnels under the roads to get people closer to their destination. It would surely be easier than adding an extra station (which would be overkill given the station spacing).
Actually, Ottawa has a by-law stating that all new buildings in the downtown (this was passed in like the 70s) must have a way to connect to the surrounding buildings via 2nd floor walkways. It hasn't really been used yet, but all buildings are built with that in mind.
Take Minto Place for example, it has a 2 floor concourse.
And as for my Eglinton comment, I was referring mainly to the central portion. I realize that in many ways this is more of a rapid transit line than Eglinton will be. However, there are portions of the Transitway that interact with regular traffic, just in dedicated lanes.