As someone who lives in Milton I have a vested interest in increased Milton service as well. As I’ve posted before, I travel into the city a lot on weekends. Especially in the summer with my bike. This means driving down to Bronte and fighting for a spot on a LSW train that is already full coming out of Burlington. Even with driving to Bronte, it’s still faster than the Milton bus that stops at every street along Thompson and Derry Roads, then gets stuck in the 401 & QEW parking lots. I had to take the bus home from Toronto back in July (on a Saturday) and it took almost 25 minutes before we cleared Lakeshore and got on the QEW.
During the weekends, I would guess there are less than 10 trains (including both directions) through Milton, from what I can hear from my apartment. So, I don’t buy the lack of track capacity excuse.
When I contacted Metrolinx about increasing service, I too got the standard “Thank you for contacting GO Transit about our service on Milton GO Train”.
My options for increased service (without the need for expensive land purchase or grade separation) would be as follows:
#1 – Limited weekend service. For example. 4 AM trains to Toronto 7am, 8am, 9am & 11am and those same 4 trains can return at 4PM, 6PM, 8PM, 10PM. This would allow people to spend a day or early evening in the city for business or entertainment. No competing with LSW passengers
#2) Mid-day / weekend service: Reinstate the third existing track (that is covered in weeds between Dixie & Erindale) and run two-way train service between Union and Erindale. From Erindale, run the 21 buses along the transitway to 407/Trafalgar park’n’ride. Then up Trafalgar to the outlet mall at Steeles. Then hop on the 401 to Milton GO. (All the passengers that get on along Derry can make their way to Milton station.
#3 midday / weekend service: Adjust the 21 buses to the following route. Milton Go to 407/Trafalgar park-n-ride. Transitway to Renforth station. 427 to Dundas to Kipling terminal
In my opinion options 2 and 3 would be faster than the current 21 bus via Meadowvale GO.
I’ve been told that increased train service may not be possible due to lack of crew. I find that hard to believe. I’m sure the Milton train crews would love to get in some extra time, as unlike their LSW/E or even Kitchener and Barrie co-workers, they don’t get extra midday or weekend runs. So, I’m sure they would jump at the chance to run extra trains on the weekend.
Before the election, Doug Ford promised Milton expansion. What have we got so far? A repaved parking lot.  How about instead of building the 413 (or a 401 tunnel), take that cash and put it towards expanding and making the Milton line comparable to the LSW/E lines. That would do more to ease congestion on the 401 than new highways or tunnels.
Thus ends my rant.