If we keep adding all these stops to the UP line, tourists will simply opt to take a taxi or Uber instead, because Google will show it as being faster.
For myself, living in Oakville, Google maps is telling me that taking the LSW and UP is barely competitive with taking GO Bus 56 and GO Bus 40. Add in two more stops at St. Clair and Woodbine and the UP is useless to me.
IMO, it feels like we're adding all these UP stations in order to pick up GO's slack. Once the Kitchener line is improved (fourth track, etc.) than maybe we'll realise we didn't have to build these UP stations?