Why can't it be? Not all trains have to stop at every stop (note the 4-track corridor in this location). Also, not all people travelling from Oakville are heading downtown. What if someone wanted to visit a friend in one of the condos at Park Lawn? Or maybe they live in Burlington and work at the Ontario Food Terminal? Or are they coming from Whitby and want to visit Humber Bay Park and Bike the Humber River trail? these trips would have all been impractical by transit before, but with this stop, it will be quite possible and probably more attractive than driving. these examples are specific to Park Lawn, but I'm sure similar examples can be made at any of the new stations. Imagine the following service pattern on LW,
- Express trains every 20 minutes, skipping Long Branch, Mimico and Park Lawn
- Local trains every 10 minutes, all stops from Oakville
That seems to serve everyone's needs pretty well; you get your fast train to Toronto, and others get served by the transit they need.