With respect to the map overall, I think it looks good.
That said, I think there may be issues of clarification, and one could debate whether some additional information would be beneficial (though at the risk of cluttering the map).
In respect of that, I see symbols for escalators/stairs/elevators, but its not entirely clear that they lead to exits from the Path. I know they do; but if you were a tourist would you know that? Or would you read it the same way you might a shopping mall escalator which doesn't necessarily take you to an exit?
The international exit symbol, I believe is the green 'running man'. Should that be used to show exit points?
Second thought, to some extent, this is a shopping mall map. They've gone of out their way to show where food courts are...............should they also show where washrooms are?
We're probably past the point where we would put pay phone symbols on; though for those folks who either don't have a cell or can't get reception etc....
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On the subject of the TTC logo over all, yes, it's retro, but I think that has its charm.
There is, however, clearly a scaling issue.
That might be addressed by replacing TTC altogether with the subway car symbol the TTC uses?
Or perhaps is a need for a different logo for this type of application. One sees this often with airlines. The historic logo and name may remain on a uniform or the full length of the plain, but a version
exists which can work on a crowded airport terminal sign.