It's only 6 minutes if you're taking the whole line. What % of people will be doing that?
For others removing the midblock stops will add time. Let's look at a few examples:
https://www.google.ca/maps/dir/43.7...17107,-79.2924739,17z/data=!4m2!4m1!3e2?hl=en - removing the midblock stop bumps your walk to 7 minutes (600m) from just over 2 minutes (190m)
https://www.google.ca/maps/dir/43.7...@43.7885286,-79.2629378,17z/data=!4m2!4m1!3e2 - removing the midblock stop bumps your walk to 9 minutes (750m) from just over 5 minutes (450m)
https://www.google.ca/maps/dir/43.7...@43.8007751,-79.2125545,17z/data=!4m2!4m1!3e2 - removing the midblock stop bumps your walk to 4 minutes (350m) from just over 9 minutes (700m)
As Steve Munro speaks about in this article -
http://stevemunro.ca/?p=7223 - "This 2011 paper from the Victoria (B.C.) Transport Policy Institute reviews the factors that affect transit’s attractiveness and how these might be applied. Of particular interest is the notion that making a trip more comfortable (less crowded, more convenient) can produce comparable improvement to reductions in travel time.
This is not surprising when one considers that transit riders assign a high penalty value to unpredictable events such as waiting for a bus or transferring between routes, and their perception of a journey is affected by how easily they can board and comfortably ride.
This has important implications for planning since time costs are a dominant factor in transport project evaluation. Conventional evaluation practices tend to ignore qualitative factors, assigning the same time value regardless of travel conditions, and so undervalue service improvements that increase comfort and convenience. Yet, a quality improvement that reduces travel time unit costs by 20% provides benefits equivalent to an operational improvement that increases travel speeds by 20%. [p. 2]"
People don't perceive all portions of their trips equally. If your walk jumps from 4 minutes to 9 minutes, the perceived increase in travel time is going to be much greater than the extra 5 minutes it'll take you to get to the stop. This will be aggravated when you're running late and you see a train pass you by or when weather conditions are poor.
That's not to say that we should have stops 75m apart - there comes a point where there are diminishing returns - but my point is that for plenty of people the impact will be much greater than 6 minutes, to the point that a number will be disincentivized to take transit.
Ultimately it's a balancing act and there's no correct answer, but at the very least we need to acknowledge that there will be people to which cutting out the midblock stops will be a significant downgrade.