I find it interesting that most of your references are to Line o1 the Bloor Danforth line, I actually find them to be the most efficient with crew changes. Usually when one happens it is at Coxwell and the driver will announce that there is one and the train will hold a few minutes to accommodate it, also most of the time the driver and guard are in position on the platform ready to take over as soon as the one on the train is clear sometimes they even get on before they exit. Whereas on Line 2 trains essm to just hold and wait well, the Guard and Driver leave the train without telling anyone that they are changing crews and then what seems like 10 minutes later you see them either get off of the train on the other platform or walking slowly down the stairs, meanwhile everyone onboard the train is checking ther watch and wondering why they are stopped.