Northern Light
Superstar
The majority of people are going to be torn between 2a, and 2b. I do find it interesting though, that they chose to include a brimely/sheppard station over a station on birchmount.
Warden to Kennedy is only a ~1.7km gap
Birchmount is less than 1km from a Kennedy Station
Brimley is in the range of 1.3km (from Kennedy) and McCowan about 2.2km.
Brimley is a stretch for inclusion and may be dropped (it is, in fact the only station likely to be dropped), but if retained, is more viable than Birchmount.