Do you mean the 29 bus stopping at Dufferin station?The best solution -if one can call it that- in the end would be the meet in the middle. They shouldnt let fare evasion creep up too high, while at the same time they have to manage the number of enforcement officers they hire. No doubt it's a difficult task, but in some cases the TTC makes it downright easy to avoid paying fares. Dufferin is an excellent example of that.
Every time I've used it, it's been de facto all door boarding because it would just take way too long to load everyone through the front.
I wonder what portion of those riders are directly off the subway. I bet it's pretty high. I would imagine that the marginal losses for the odd person not paying their fare would be made up by the speed/reliability picked up, but I don't know.
I don't know why there's so much distrust of our fellow citizens. I choose to give everyone the benefit of the doubt that they have paid their fare. I see people give me a weird look when I jump on the back of a streetcar with my metropass in my pocket - am I the person that these people run to Twitter and UrbanToronto to complain about getting a free ride? Flaunting the system? I don't know, I'm the guy who still puts their token in the slot when the station attendant is on a bathroom break, so maybe I'm just naive.
That said, there are some weak spots because of the half-assed dive into POP, in addition to the Dufferin bus. I've never seen a fare inspector inside St. Clair W station, or St. Clair station either, for that matter. It would be so easy to jump on the streetcar one stop outside the station. Once you're off the car, it's assumed you've paid your fare.
The TTC really needs to go to a full system of POP, but given all the money they're spending on fare gates, I guess that's off the table.
Once every one has a Presto card, we won't need to worry about picking up an actual POP receipt, so it should be easy.