I seem to recall that back in the selling of the move to Woodbine, a commitment was made to not close EN until Woodbine was available. Can’t find the reference , I suspect it was at a Town Hall when Woodbine was announced,
Even so, changing the service profile to reduce service at one station to benefit another is probably inviting a level of concern and confusion that creates needless bad press. And, if the added track and platforms are just about ready, it would be doubly hard to explain why service was halted and then reinstated all over again.
Implementing a weekend service which skips Etobicoke North is not a reduction of service, because the station has never had weekend service in the first place. The steps would be:
1. Bus service which skips Etobicoke North (current)
2. Train service which skips Etobicoke North (this discussion)
3. Train service which serves Etobicoke North (planned)
As for midday service, if a 30-minute service to Bramalea were interleaved with UP, it would presumably be
in addition to the existing hourly service on the 3rd track, since it wouldn't make any sense to lose service to Mount Pleasant and Brampton.
Similarly while one might be able to challenge ML operations to interleave, that’s something with a learning curve, and a predictable disruptive change of platforms for riders at each end of the interleaving. A lot of change that creates pain….
In all respects while one might be able to make the change, I’d leave sleeping dogs be. ML is a “crawl before you walk” operation after all.
Interleaving UP and GO is not new to Metrolinx. The September 2021 schedule also did so, which is how it was able to have 4 tph peak
and 2 tph counter-peak on the Kitchener line, in addition to 2tph peak and counter-peak on UP.
We are discussing the possibility of a Bramalea-Union weekend service under the assumption that Metrolinx has not been able to negotiate slots west of Bramalea (or is reluctant to pay what CN is asking). The advantage of interleaving such a service with UP is that it allows for much shorter layovers at Bramalea. If an hourly service were service were operated on the existing third track like the current weekday service, it would spend nearly an hour sitting in Bramalea, since the only passing location is at Malton, just east of Bramalea. As you can see in the conceptual timetable I posted above, slotting into the existing UP timetable would produce a 19-minute layover at Bramalea.
What leaves me shaking my head is how some stations - Bloor and Bramalea, al least - have been built with one wide platform and one narrow platform…. And which is most likely to see the heaviest pedestrian volume?
One can’t assume this was ever very well thought through.
As far as I'm aware, the final track arrangements (i.e. which service in which direction on which track) are part of the design work currently being undertaken by DB/Alstom and Metrolinx. So the service arrangements certainly weren't known more than a decade ago when stations such as Bloor and Bramalea were designed.