This is a bit of a different idea but, one thing that I would like to see the TTC do is use a bus stop sign like they do in Vancouver, where I lived most of my life. In Vancouver every bus stop sign shows which route or routes use that particular stop. Their is actually a lot of information just on the bus stop sign which helps us regular users of transit. Some stops only have one routes that uses that stop and some bus stop signs show many different route numbers that use that particular spot like on Granville where many routes converge. The bus stop sign I have included show the four routes that share that particular stop.
http://farm1.static.flickr.com/125/321521603_88ed87d093.jpg
I think if the TTC did a small, comparitively, investment like this it would add convenience to the system by giving so much more information for us commuters. It would be even more helpful when I am travelling somewhere I am not familiar with, like when I was new to Toronto 5 yrs ago or when I am visiting a part of the city I don't normally go to.