The Approach units at TC are definitely encouraged to "over control" VFR transits. The airlines do not want or like any form of TCAS alert when on approach, thus to save paperwork and time explaining your actions, VFR crosses are routed well clear of inbound or outbound aircraft.
Loads of traffic information is passed, tower controllers informed and encouraged to work the aircraft, some may refuse as they are too busy. At times the whole process is just so much hassle, crossings are refused.
Unfortunately these are the facts! Let the discussions commence.