Don Branch I thought too. If a second Toronto station were to be added prior to Peterborough, it's likely be where it crossed an expanded Line 4 (Brimley maybe?)
I think at least having Line 3 and whatever UPX becomes as the same technology makes a ton of sense, even if the service(s) are never branched/interlined.
On further inspection, Network Rail-operated stations, which includes many of London's largest are now free. I'll have to check next trip if the conditions are being maintained as well as they were.
There’s been some chatter recently. Since the technologies will eventually be similar—and the systems serve comparable roles in both the east and west—merging them isn’t an unreasonable idea. The real challenge would be figuring out how such a service interfaces with Union Station and the...
If it were a U.K. or (most of) mainland Europe station, you'd have to pay to enter the WC, but it would be constantly attended for cleanliness and security. Not popular to say here, but I do sometimes wonder if it is the better model.
Although, the counter-argument may be, if they can't foresee it working at a busy interchange station, how can they foresee retail working anywhere currently?