Everyone's asking "how many coffee shops does Union need?" when the question should be "how many can it support?" And it seems the answer is "more than there are now".
Notwithstanding the terrible service at Timmie's that creates huge lineups at every location (it's not the volume that's the problem...), there seems to be ample demand for more coffee shops.
Also, Bay Concourse is a LONG walk from York concourse when you're in a hurry at rush hour. If there's food going in both ends of the station, why not repeat services?
I should mention though that I don't think we need any more Timmie's. Anywhere.